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- Be weak in doing sth 在某方面弱
- You must be weak in the head if you believe that. 你相信那件事可就太傻了。
- Be instrumental in doing sth for sb. 为某人干某事出力。
- Go beyond one's duty in doing sth. 超越职权范围做某事
- He was weak in mathematics, but good at English. 他数学差，但英语好。
- We should do our utmost in doing sth. 我们应该尽力去做某事。
- Concentrating on. Have trouble in doing sth. 做什么事情有麻烦。
- Find some difficulty in doing sth. 发现做某事有困难。
- You must be weak in the head if you think I'll agree to that. 如果你以为我会同意那事, 你一定是脑子不管用了。
- Spend a lot of care on sth. [in doing sth. 在某事上[做某事时]费很多心血。
- I failed to persevere in doing sth. 我不能坚持不懈的做某事。
- If you want to persist in doing sth,do it everyday. 如果你希望坚持做某件事，那就坚持每天做。
- The unions have always been weak in this industry. 在这个行业，工会一直没有权威。
- Some of the students are weak in English. 有些学生英语很差。
- Studying hard is one area that I am weak in. 我不擅于用功读书。
- The resulting melamine-tainted feed would be weak in protein, he acknowledged, which means the feed is less nutritious. 被三聚氰胺污染饲料就会削弱蛋白质的营养成分，他承认，这意味着饲料的营养更少。
- Chrysler was weak in the sunbelt, with its younger and more affluent drivers. 克莱斯勒公司的车子在阳光地带那些青年人和有钱人心中已经不吃香了。
- Students should be generous in doing hard jobs. 学生应该乐于做艰苦的工作。
- The Firefly You shed a flickering light; Your wings are weak in flight. Afraid to be unknown, At night you gleam alone. 飘摇弱翅轻恐畏无人识独自暗中明。
- The students were found to be weak in sports skills and in lack of understanding of sports. 贫困生体育行为的显著特点是对体育的认识不足，在体育技能方面偏弱。
