您要查找的是不是：
- On the contrary, it is a sign of mechanical weakness, it is pointless in itself, and it is due merely to immaturity and shortsighted thinking. 相反的，它是机械性软弱的徵兆，本身毫无意义，只是出于不成熟和短视的想法。
- "Osteoarthritis occurs when the fibrils are disrupted or lost - just like concrete without the steel, the cartilage becomes mechanically weak and susceptible to wear and tear. “当原纤维遭到破坏或者缺失就像混凝土缺少钢筋一样，骨性关节炎就会发生。软骨的机械性变弱易于磨损和撕裂。”
- The spirit is willing but the flesh is weak. 心有余而力不足。
- There is an inherent weakness in the design. 这设计本身存在弱点。
- The shock make me go all weak at the knee. 这件事把我吓得两腿发软。
- Is this equipment tested for mechanical aptitude? 这台设备测定了其机械适应性了吗？
- We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。
- 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。
- The shock made me go all weak at the knees. 这件事把我吓得两腿发软。
- The move water have mechanical energy. 流动的水拥有机械能。
- 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。
- Blinking is a mechanical action of the eyelids. 眨眼是眼睑的无意识动作。
- A condition or disease producing weakness. 疾病导致虚弱的状况或疾病
- 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。
