得力: able, capable, competent, efficient...
词: word, statement, speech, lyrics...
大夫: doctor, physician...
冰山: iceberg...
措施: measure, step...
她们: they, them (for females)...
口气: tone of voice, the way one speaks, manner of expression, tone...
账号: account, username...
一下: (used after a verb) give it a go, to do (sth for a bit to give it a try), one time, once, in a while, all of a sudden, all at once...
演唱会: vocal recital or concert...
