Most people are weak and sick.

大多数人都很虚弱，并患有疾病。

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Most journals are weak in statistical review, and this damages the quality of what they publish.

数据审查是大多数杂志的薄弱环节，而这会损害出版物的质量。

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"It's not enough to just sit up straight if your core muscles are weak," said Dr. Praveen Mummaneni.

普拉文·莫曼奈尼博士说：“如果你的核心肌群比较虚弱，那么仅仅坐直是不够的。”

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Chris Howson says many of the causes of preterm births are related to poverty and weak health-care systems.

VOA: special.2009.10.19

I mean, if the energy is lower to occupy a smaller volume, then if I have this room and a bunch of molecules of oxygen, and nitrogen and what have you in the air, and there are weak attractions between them, why don't they all just sort of glum together and find whatever volume they like.

我的意思是，如果占据小的体积会使能量降低，如果我有这样一个空间,和一些氧气，氮气和其他空气中有的气体，并且分子之间还有微弱的相互作用，为什么他们不黏在一起,然后占据他们所想要占据的体积。

麻省理工公开课 - 热力学与动力学课程节选

So, what you have are small, poor, weak units, and that's a miserable situation.

我们所看到的是微小的,贫穷的,虚弱的小单元,这是一种悲惨的境地

耶鲁公开课 - 古希腊历史简介课程节选

Prudential controls on capital inflows certainly make sense, particularly when domestic banks are weak.

ECONOMIST: Time to turn off the tap?

Those of us that are weak in this area cannot naturally overcome that weakness .

FORBES: Yes, You Can Think Your Way To A Better, Longer Life!

Unless repossession forces a sale, homeowners prefer to sit tight when markets are weak.

ECONOMIST: America's housing market