ReadWriteQuiz
Chinese dictionary
v.to do something troublesome and tiring without declining; to spare no pains
不辞劳苦的反复试验
painstaking process of trial
他为我而不辞劳苦。
He took trouble on my account.
不辞劳苦的反复试验
painstaking process of trial
他为我而不辞劳苦。
He took trouble on my account.