你可以只排两行而不是一行
每一列都有
col-lg-4 col-md-4 col-sm-4 col-xs-12
(因此,每行有3个“单元格”),但当然,在较小的屏幕上,必须进行调整,因此
col-xs-12
<script
src="https://code.jquery.com/jquery-3.3.1.min.js"
integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<div class="row">
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"><img src="https://picsum.photos/200"></div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"><img src="https://picsum.photos/200"></div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"><img src="https://picsum.photos/200"></div>
</div>
<div class="row">
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"><img src="https://picsum.photos/200"></div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"><img src="https://picsum.photos/200"></div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12"><img src="https://picsum.photos/200"></div>
</div>