CSS에서 줄 클램프를 사용하여 줄임표 텍스트를 사용자 정의하는 방법은 무엇입니까?

line-clamp: 2 "...123 T.";

.container {
  max-width: 200px;
  margin: 5px;
}

.main-text {
  line-height: 1.2em; 
  max-height: calc(2 * 1.2em); 
  overflow: hidden;
  display: inline-block;
  position: relative;
}

.main-text:after {
  content: "123 T.";
  display:inline-block;
  width:40px;
  position:relative;
  z-index:999;
  box-shadow:
    40px 0 0 #fff,
    80px 0 0 #fff,
    120px 0 0 #fff,
    160px 0 0 #fff;
  color: #8e8f8f;
  font-size: 10px;
  background: #fff;
  margin-left:2px;
}

.main-text span {
  position: absolute;
  top: 1.2em;
  right: 0;
  padding: 0 3px;
  background: #fff;
}

.main-text span:before {
  content: "..."; 
}

.main-text span:after {
  content: "123 T.";
  color: #8e8f8f;
  font-size: 10px;
}

<div class="container">
  <div class="main-text">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam metus mi, dapibus sit amet posuere eu, porttitor condimentum nulla. Donec convallis lorem justo, eget malesuada lorem tempor vitae. Aliquam sollicitudin lacus ipsum, at tincidunt ante condimentum
    vitae. <span></span>
  </div>
</div>

<div class="container">
  <div class="main-text">
    Lorem ipsum <span></span>
  </div>
</div>

<div class="container">
  <div class="main-text">
    Lo <span></span>
  </div>
</div>

<div class="container">
  <div class="main-text">
    Lorem ipsum dolor sit ameta, adipiscing elit. Nam metus <span></span>
  </div>
</div>

<div class="container">
  <div class="main-text">
    Lorem ipsum dolor sit ameta, adipiscing elit <span></span>
  </div>
</div>