missing

动词 miss:

1. fail to perceive or to catch with the senses or the mind
   同义词：miss, lose
2. feel or suffer from the lack of
   同义词：miss
3. fail to attend an event or activity
   同义词：miss
4. leave undone or leave out
   同义词：neglect, pretermit, omit, drop, miss, leave out, overlook, overleap
5. fail to reach or get to
   同义词：miss
6. be without
   同义词：miss, lack
7. fail to reach
   同义词：miss
8. be absent
   同义词：miss
9. fail to experience
   同义词：miss, escape

形容词 missing:

1. not existing
   同义词：lacking, nonexistent, wanting
2. not able to be found

1. Police are combing the woods for the missing children.
   警察搜遍树林以寻找失踪的孩子。
2. The hammer is missing from my toolbox.
   我的工具箱里少了一把锤子。
3. The book had two pages missing.
   那本书缺两页。
4. The child had been missing for a week.
   那个孩子已经下落不明一个星期了。

miss.ing

adj.（形容词）

Not present; absent.
不在的；缺席的
Lost:
失踪的：
例句：
a missing person; soldiers missing in action.
一个失踪人员；在行动中失踪的战士

Lacking; wanting:
缺乏的；缺少的：
例句：
This book has 2 missing pages.
这本书缺了几页