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- At present, there exist some problems in developing mine ventilation software such as long development cycle, redevelopment, low commercialization and weak extensibility. 摘要目前，我国矿井通风系统软件的研制和应用中存在着系统开发周期长、重复开发、商品化程度低以及可扩展性差等问题。
- The spirit is willing but the flesh is weak. 心有余而力不足。
- stage of weak extension and peneplane from late Permian to early Triassic; 早、中侏罗世为弱伸展背景下广盆形成阶段;
- The shock make me go all weak at the knee. 这件事把我吓得两腿发软。
- He asked for an extension of his visa. 他申请延长签证有效期。
- You must be weak in the head if you believe that. 你相信那件事可就太傻了。
- He cannot run because he has a weak heart. 他有心脏病，不能跑。
- A fearful person is a weak person. 怕这怕那的人是软弱的人。
- He built an extension onto his house. 他给自己的住宅扩建了一部分。
- Extension of the injured arm was painful. 把受伤的胳膊伸展开是很疼的。
- By extension, an array of any number of dimensions. 广义来说，矩阵可以是任意维数的数组。
- The shock made me go all weak at the knees. 这件事把我吓得两腿发软。
- His weak chest was a legacy of a childhood illness. 他那瘦弱的胸脯是儿时患病的后遗症。
- In a weak moment, I agreed to pay for her holiday. 我一时心软同意了支付她度假的费用。
- We built an extension to our house. 我们扩建了我家的房屋。
- He is weak with hunger, so I have to support him. 他饿得没有力气，我得搀着他。
- He pushed a weak student through the exam. 他帮助一位成绩差的学生通过了考试。
- He was too weak even to lift his hand. 他虚弱得连手都抬不起来。
- Her health varies from good to rather weak. 她的健康状况变化不定，有时良好，有时相当差。
- Weak foundations caused the house to subside. 由于地基不牢，这所房子已下陷。
