knock together的用法和樣例：
例句
用作不及物動詞 (vi.)
- The two boats sank together after crashing.
這兩條船相撞后同時下沉。 - He was so frightened that his knees knocked together.
他是那樣害怕，以致兩膝抖得相撞。
辭彙搭配
- one's knees knock together 嚇得兩腿發抖...
- knock about together 同 ... 廝混
- knock their heads together 拿著兩人的頭撞(用武...
