have cudgeled one's brains;for all one's pains;have expended much care and thought on sth.;have given much thought to sth. ;

As I listen to them, I can visualize their parents, striving to teach excellence.
当我听着他们, 我似乎能看到他们为了教育好他们用心良苦的父母.
来源:网络文摘精选But if students cannot make it into Britain, such canny marketing is in vain.
但是如果这些学生无法来到英国, 那这些用心良苦的营销策略都将付诸东流.
来源:网络文摘精选Over the past two years, as the captain Azinger can be well-intentioned.
两年来, 作为队长的阿辛格可谓是用心良苦.
来源:互联网摘选He failed with the best of intentions to win the sympathy of his pupils.
他虽然用心良苦,想获得学生们的同情,结果还是失败了.
来源:互联网摘选Others are preoccupied with not getting caught , or thinking of ways to catch someone else.
这位同伴可能是个用心良苦的母亲, 也可能是个不怀好意的孩子.
来源:互联网摘选这个用心良苦的集团包括了秘鲁, 以及比巴西经常账户盈余还要多的智利.
来源:互联网摘选
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