difficulty, hardship
这两个名词都表示困难之意。
difficulty : 指需大量思考和技巧或努力才能克服的任何困难。
Because of this difficulty in closing, operators commonly use wrenches and other persuaders on the valves.(由于关闭困难,操作者一般都在阀门上使用扳手和其它强制性工具。)
hardship : 侧重指生活上令人难以承受的艰难困苦,如疾病、贫穷等磨难。
My mother suffered all kinds of hardships throughout her life.(我母亲一生尝到了各种辛酸。)
diligent, industrious
这两个形容词均表示勤奋的之意。
diligent : 多指为一定的目的或追求而勤奋。
He made a diligent attempt to learn Russian.他勤奋地学习俄语。
industrious : 指由习惯养成或天性形成的勤奋。
We Chinese people are brave and industrious.(我们中国人是勇敢勤劳的。)
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