我认为样本内部可以优化您的设计很有用。
<div class="container">
<div class="col-md-12">
<h1>Bootstrap 3 Thumbnail Slider</h1>
<div class="well">
<div id="myCarousel" class="carousel slide">
<!-- Carousel items -->
<div class="carousel-inner">
<div class="item active">
<div class="row">
<div class="col-sm-3"><a href="#x"><img src="http://placehold.it/500x500" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x"><img src="http://placehold.it/500x500" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x"><img src="http://placehold.it/500x500" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x"><img src="http://placehold.it/500x500" alt="Image" class="img-responsive"></a>
</div>
</div>
<!--/row-->
</div>
<!--/item-->
<div class="item">
<div class="row">
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
</div>
<!--/row-->
</div>
<!--/item-->
<div class="item">
<div class="row">
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
<div class="col-sm-3"><a href="#x" class="thumbnail"><img src="http://placehold.it/250x250" alt="Image" class="img-responsive"></a>
</div>
</div>
<!--/row-->
</div>
<!--/item-->
</div>
<!--/carousel-inner--> <a class="left carousel-control" href="#myCarousel" data-slide="prev">‹</a>
<a class="right carousel-control" href="#myCarousel" data-slide="next">›</a>
</div>
<!--/myCarousel-->
</div>
<!--/well-->
</div>
http://bootply.com/81478