He made a weak attempt to look cheerful.
他有气无力地摆出高兴的样子。
He was criticized as a weak and indecisive leader.
他被批评是位既懦弱又优柔寡断的领导人。
There was a weak attempt at applause, but it died early.
有微弱的掌声，但它很快就消失了。
Also, in surface water, there is a weak acid, carbonic acid, not sulfuric acid, but carbonic acid that helps dissolve the rock.
另外，在地表水中存在一种弱酸，它是碳酸，而不是硫酸，而且是能帮助溶解岩石的碳酸。
She was born with a weak heart.
她生来就有一个衰弱的心脏。
Before she arrived, Anne expected her new pupil to be a quiet, weak child.
在到达之前，安妮希望她的新学生是个安静、虚弱的孩子。
Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob.
四种基本力（万有引力、电磁力、强核力和弱核力）中的每一种都有一个理论上的旋钮。
She tired easily and had a weak heart.
她容易疲劳，心脏也比较弱。
With such a weak heart she was lucky to come through the operation.
她的心脏很弱，手术后能活下来真是幸运。
The owner said the bird may have escaped through a weak spot in the aviary.
主人说那只鸟可能是从鸟舍的一个薄弱处逃出去的。
He looked dazed as he spoke to reporters, managing only a weak smile.
他和记者说话时显得恍惚，只勉强做了个淡淡的微笑。
He was a weak little mouse of a man.
他是个懦弱无能的人。
He was a nice doctor, but a weak man who wasn't going to stick his neck out.
他是个好医生，但为人懦弱，遇事不敢出头。
She suffered from a weak heart.
她心脏不好。
Miss Holloway had a weak heart. She must have had a heart attack.
霍洛韦小姐心脏衰弱。她一定得过心脏病。
To his surprise he didn't feel too weak. Light-headed certainly, and with a sense of unreality, but able to walk.
令他惊讶的是，他并没有感觉太虚弱，虽然头晕，并有些不真实感，但能走路。
Grace poured a cup of weak tea.
格莱斯倒了一杯淡茶。
In spite of his disappointment, he managed a weak smile.
尽管他很失望，他还是勉强露出一丝淡淡的微笑。
Do you think the prosecution made any particular errors, or did they just have a weak case?
你认为控方是真的出了纰漏，还是只是证据不足？
The excellent acting wasn't enough to redeem a weak plot.
精彩的表演不足以掩盖情节的拙劣。
Any economic strategy based on a weak dollar is destined to fail.
任何基于疲软的美元之上的经济策略都注定会失败。
The Treasury Department has ruled out using a weak dollar as the main solution for the country's trade problems.
财政部已经不考虑使用疲软美元作为解决该国贸易问题的主要办法。
She managed a weak, unconvincing smile.
她勉强挤出一丝笑意。
这位病人脉搏很弱。
The Duchess began in a low, weak voice.
公爵夫人用低沉的、微弱的声音说。
Knowing my weak spots can make me become a better person.
知道自己的弱点可以让我成为一个更好的人。
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