1. 离开：drop astern 落后 | drop away 离开 | drop back into 恢复

2. 转体弯腰躲闪：200.下潜[蹲]躲闪:duck | 201.向前下潜:fold | 202.转体弯腰躲闪:drop-away

3. (一个一个地)离开, 散去：fall astern 跟在他船后面; 落在(他船)后面 | drop away (一个一个地)离开, 散去 | drop back 退后, 后撤 恢复(旧习惯等)(into)

4. 离开, 散去, 减少：drop astern 落后. 跟在他船后面. 落在(他船)后面. | drop away 离开, 散去, 减少. | drop back 退后.

1. (地势)走低,降低
    If land or ground drops away, it slopes down so that it is at a lower level to where you are or from a particular point that has been mentioned.

drop away

    e.g. To the south the hills dropped away to farmland...
           山势在南边一路下倾延伸至农田。
    e.g. From the house, the garden drops away, surrounded by a rural scene of woodland.
           从房子的位置,花园开始变低,四周树木葱郁，一派田园风光。

1. get worse

    e.g. My grades are slipping

    Synonym: slipdrop offfall away