He made a diligent attempt to learn Russian.
他勤奋地学习俄语。
He made a diligent attempt to learn Russian.
他勤奋地学习俄语。
We should devote ourselves assiduously and faithfully to the duties of our profession.
我们应当勤奋地而且忠诚地献身于我们的职责。
His fidelity and industry brought him speedy promotion.
他的尽职及勤奋他很快地得到晋升。
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