英文: Every single arm drill is also a kicking drill.
中文: ,保持好的流线,注视池底。英文: On passenger ships,an abandon ship drill and fire drill shall take place weekly.
中文: 例1:客船每周应举行1次弃船演习和消防演习。英文: The soldiers were at drill.
中文: 士兵们正在操练。英文: Let's drill them in English pronunciation.
中文: 我们来给他们做英语发音练习。英文: This drill can bore through rock.
中文: 这个钻子可以钻穿岩石。