1. dusty 满是灰尘的
My eye alighted on a dusty old book at the back of the shelf.
我偶然发现在书架後面有一本满是灰尘的旧书.
The dusty road made the travelers dusty too.
满是尘土的路弄得行人也满面尘土了。
2. commit suicide 自杀
After shooting his wife, he commit suicide in the bedroom.
在开枪打死妻子后，他在卧室自杀。
That's nonsense. Without money, I would be so sad I would commit suicide at once.
无稽之谈，如果没有钱，我伤心的几乎要马上自杀。
3. in despair 失望地
The poor woman was in despair.
那可怜的女人陷入了绝望。
He gave up the struggle in despair.
他绝望地放弃了斗争.
4. rap 轻敲,厉声说出,叱责
There is a light rap at the door.
有轻轻的敲门声。
The chairman rapped on the table for order.
主席敲击桌子以维持秩序。