例句：They watched and commented.
      他们边看边议论。

      The discovery is hardly commented by the press.
      新闻界对该发现几乎未加评论。

2.swipe v.偷盗, 扒窃

例句：She swiped my pen.
      她偷了我的钢笔。

3.addition n.增加的人或事物

例句：They've just had an addition to the family.
      他们家里刚刚添了一口人。

4.launch v.开始从事，发起，发动（尤指有组织的活动）

5.mark vt.在…留下痕迹, 标出

例句：The table marks very easily.
      这张桌子很容易留下印痕。

     She was careful to mark her place before she shut the book.
     合上书以前, 她小心地做了记号。
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