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。）
dinner, meal
这两个名词都有“餐”之意。
dinner : 正餐。指一日中的主餐，可中午吃，也可晚间吃。
I haven't had dinner yet.（我还没有吃晚饭呢。）
meal : 泛指一日三餐的任一餐，也可指一餐所吃的东西。
The Bakers have invited us out for a meal tonight.（贝克一家今晚请我们到外面去吃饭。）
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