它开始打印所有内容29d 18h 46m，然后停止。我知道为什么。哦
有人能告诉我为什么它会一直打印到那个时候然后停止吗？
<?xml version="1.0" encoding="utf-8"?>
<?DOCTYPE phones SYSTEM "http://userpages.umbc.edu/~v16/is448/hw4/hw4_phones.dtd">
<?xml-stylesheet type="text/css" href="http://userpages.umbc.edu/~v16/is448/hw4/hw4_phones.css" ?>
<phones>
<phone>
<title>Apple iPhone 4S - 16GB - White (Factory Unlocked) Smartphone</title>
<gBay_id>Item: 160913150440</gBay_id>
<user_id>Seller: milehighmobilellc</user_id>
<category>Type: Smartphone</category>
<condition>Condition: Used</condition>
<brand>Brand: Apple</brand>
<model>Model: iPhone 4s</model>
<carrier>Carrier: Factory Unlocked</carrier>
<color>Color: White</color>
<OS>Operating System: Apple iOS</OS>
<contract>Contract: Without Contract</contract>
<style>Form Factor: Bar</style>
<buying_format>Buy It Now</buying_format>
<auction>
<starting_price>N/A</starting_price>
<duration>N/A</duration>
</auction>
<buy_it_now>
<starting_price>$449.99</starting_price>
<duration>29d 18h 46m</duration>
</buy_it_now>
<description>
Just when you thought a smartphone couldn’t get any better, it just did — the
iPhone 4S is sure to change the way you communicate. The Siri technology lets
you talk to this Apple smartphone as you would talk to a person, turning the
iPhone 4S into a personal assistant. The powerful dual-core A5 chip ensures that
this Apple phone gives you a lightning-fast performance and life-like graphics.
Shoot 1080p HD videos and click crystal-clear snaps with the 8 MP camera of this
Apple smartphone. To make your life easier, this Apple phone runs on iOS 5 that
lets you enjoy numerous features and an easy-to-use interface. That’s not all;
with the iCloud feature of the iPhone 4S, you can stop worrying about managing
your stuff, because your phone does it for you.
</description>
<shipping>
<cost>$0.00</cost>
<speed>Expedited Shipping</speed>
<shipping>
<payment>PayPal, Bill Me Later</payment>
</phone>
<phone>
<title>HTC Droid Incredible - 8GB - Black (Verizon) Smartphone</title>
<gBay_id>Item: 251173407738</gBay_id>
<user_id>Seller: jpfredd710</user_id>
<category>Type: Smartphone</category>
<condition>Condition: Used</condition>
<brand>Brand: HTC</brand>
<model>Model: Droid Incredible</model>
<carrier>Carrier: Verizon</carrier>
<color>Color: Black</color>
<OS>Operating System: Android 2.3.4</OS>
<contract>Contract: Without Contract</contract>
<style>Form Factor: Bar</style>
<buying_format>Auction</buying_format>
<auction>
<starting_price price="$62.01"></starting_price>
<duration time="50m 30s"></duration>
</auction>
<buy_it_now>
<starting_price price="N/A"></starting_price>
<duration time="N/A"></duration>
</buy_it_now>
<description>
The HTC Droid Incredible lets you communicate effortlessly through its
touchscreen interface. This HTC smartphone has a 3.7-inch, 480x800-pixels
resolution AMOLED display. Shoot pictures and videos using the built-in
8.0-megapixel camera. This HTC cell phone has a 1 GHz Snapdragon processor,
and 512 MB RAM running Google’s Android 2.1 or 2.3.4 (Gingerbread) with HTC
Sense UI. What’s more, this CDMA HTC smartphone is Wi-Fi-ready. This HTC
mobile phone has 8 GB memory, and supports up to 32 GB microSD memory cards.
The HTC Droid Incredible has built-in Bluetooth 2.1 with A2DP support, and
a microUSB 2.0 port.
</description>
<shipping>
<cost>$5.99</cost>
<speed>Economy Shipping</speed>
<shipping>
<payment>PayPal, Bill Me Later</payment>
</phone>
<phone>
<title>HTC 7 Pro - 16GB - Gray (U.S. Cellular) Smartphone</title>
<gBay_id>Item: 181006815999</gBay_id>
<user_id>Seller: st4mford</user_id>
<category>Type: Smartphone</category>
<condition>Condition: Used</condition>
<brand>Brand: HTC</brand>
<model>Model: 7 Pro</model>
<carrier>Carrier: U.S. Cellular</carrier>
<color>Color: Black</color>
<OS>Operating System: Windows Phone 7</OS>
<contract>Contract: Without Contract</contract>
<style>Form Factor: Bar</style>
<buying_format>Auction</buying_format>
<auction>
<starting_price price="$79.99"></starting_price>
<duration time="1h 14m 29s"></duration>
</auction>
<buy_it_now>
<starting_price price="$119.99"></starting_price>
<duration time="1h 14m 29s"></duration>
</buy_it_now>
<description>
View and edit the office docs on your phone. Quickly and easily cut through
the clutter to see only the unread, urgent, or flagged messages in your
Outlook inbox. And use SharePoint, when you need a little bit of help from
your team to crack the project.The slide and tilt screen on the HTC 7 Pro
angles perfectly to reveal a dedicated QWERTY keyboard. The keys are raised
and nicely spaced for fast and comfortable typing. And because the screen
tilts, the HTC 7 Pro is perfect for watching videos - hands free - when you
have a brief moment to kick back and relax.
</description>
<shipping>
<cost price="$3.99"></cost>
<speed type="Economy Shipping"></speed>
<shipping>
<payment>PayPal, Bill Me Later</payment>
</phone>
款式：
phones { font-family:arial,calibri; }
title { font-size:125%; font-family:trebuchet ms, arial; font-style:bold; }
gBay_id { font-size:75%; color: blue; }
user_id { font-style:bold; }
buying_format { background-color: #D8D8D8; }
auction { background-color: #D8D8D8; }
buy_it_now { background-color: #D8D8D8; }