vt.

1. 战胜；征服；压倒
   The defense was overwhelmed by superior numbers.

   防守被优势的兵力摧垮了。

2. 覆盖；淹没
   The village was overwhelmed by ash from the volcano.

   村子被火山灰覆盖。

3. 使受不了；使不知所措[H][（+by/with）]
   I was overwhelmed by his generosity.

   他的慷慨令我感激难言。

v.

1. bury or drown beneath a huge mass.
   ▸give too much of something to:

   they were overwhelmed by letters.
2. have a strong emotional effect on.
3. defeat completely; overpower.