不幸的是，在CSS的当前状态下没有。

省略号渲染有一个先决条件:空白:nowrap，这实际上意味着:省略号只在单行文本容器上绘制。

对此，我提出了自己的解决方案:

/*this JS code puts the ellipsis (...) at the end of multiline ellipsis elements
 *
 * to use the multiline ellipsis on an element give it the following CSS properties
 * line-height:xxx
 * height:xxx (must line-height * number of wanted lines)
 * overflow:hidden
 *
 * and have the class js_ellipsis
 * */

//do all ellipsis when jQuery loads
jQuery(document).ready(function($) {put_ellipsisses();});

//redo ellipsis when window resizes
var re_ellipsis_timeout;
jQuery( window ).resize(function() {
    //timeout mechanism prevents from chain calling the function on resize
    clearTimeout(re_ellipsis_timeout);
    re_ellipsis_timeout = setTimeout(function(){ console.log("re_ellipsis_timeout finishes"); put_ellipsisses(); }, 500);
});

//the main function
function put_ellipsisses(){
    jQuery(".js_ellipsis").each(function(){

        //remember initial text to be able to regrow when space increases
        var object_data=jQuery(this).data();
        if(typeof object_data.oldtext != "undefined"){
            jQuery(this).text(object_data.oldtext);
        }else{
            object_data.oldtext = jQuery(this).text();
            jQuery(this).data(object_data);
        }

        //truncate and ellipsis
        var clientHeight = this.clientHeight;
        var maxturns=100; var countturns=0;
        while (this.scrollHeight > clientHeight && countturns < maxturns) {
            countturns++;
            jQuery(this).text(function (index, text) {
                return text.replace(/\W*\s(\S)*$/, '...');
            });
        }
    });
}

p { width:100%; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; background:#fff; position:absolute; } <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed dui felis. Vivamus vitae pharetra nisl, eget fringilla elit. Ut nec est sapien. Aliquam dignissim velit sed nunc imperdiet cursus. Proin arcu diam, tempus ac vehicula a, dictum quis nibh. Maecenas vitae quam ac mi venenatis vulputate. Suspendisse fermentum suscipit eros, ac ultricies leo sagittis quis. Nunc sollicitudin lorem eget eros eleifend facilisis. Quisque bibendum sem at bibendum suscipit. Nam id tellus mi. Mauris vestibulum, eros ac ultrices lacinia, justo est faucibus ipsum, sed sollicitudin sapien odio sed est. In massa ipsum, bibendum quis lorem et, volutpat ultricies nisi. Maecenas scelerisque sodales ipsum a hendreritLorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed dui felis. Vivamus vitae pharetra nisl, eget fringilla elit. Ut nec est sapien. Aliquam dignissim velit sed nunc imperdiet cursus. Proin arcu diam, tempus ac vehicula a, dictum quis nibh. Maecenas vitae quam ac mi venenatis vulputate. Suspendisse fermentum suscipit eros, ac ultricies leo sagittis quis. Nunc sollicitudin lorem eget eros eleifend facilisis. Quisque bibendum sem at bibendum suscipit. Nam id tellus mi. Mauris vestibulum, eros ac ultrices lacinia, justo est faucibus ipsum, sed sollicitudin sapien odio sed est. In massa ipsum, bibendum quis lorem et, volutpat ultricies nisi. Maecenas scelerisque sodales ipsum a hendrerit.</p>

我在YouTube的主页上看了一下它是如何解决这个问题的，并进行了简化:

.multine-ellipsis {
  -webkit-box-orient: vertical;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: normal;
}

这将允许2行代码，然后附加一个省略号。

要点:https://gist.github.com/eddybrando/386d3350c0b794ea87a2082bf4ab014b

p{
line-height: 20px;
width: 157px;
white-space: nowrap; 
overflow: hidden;
text-overflow: ellipsis;
}

或者我们可以通过使用和高度和溢出来限制行。

You can achieve this by a few lines of CSS and JS.

CSS:

        div.clip-context {
          max-height: 95px;
          word-break: break-all;
          white-space: normal;
          word-wrap: break-word; //Breaking unicode line for MS-Edge works with this property;
        }

JS:

        $(document).ready(function(){
             for(let c of $("div.clip-context")){
                    //If each of element content exceeds 95px its css height, extract some first 
                    //lines by specifying first length of its text content. 
                   if($(c).innerHeight() >= 95){
                        //Define text length for extracting, here 170.
                        $(c).text($(c).text().substr(0, 170)); 
                        $(c).append(" ...");
                   }
             }

        });

HTML:

        <div class="clip-context">
            (Here some text)
        </div>