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- weak reproductive mechanism 弱繁殖机制
- Based on the reproductive mechanism in fish, the author developed a new sustained-release microsphere embedded with gonadotropin releasing hormone (GnRHa) and steroid. 在养殖条件下，许多鱼类性腺不能发育到成熟，必须采用生态和生理的促熟调控技术。
- The spirit is willing but the flesh is weak. 心有余而力不足。
- The shock make me go all weak at the knee. 这件事把我吓得两腿发软。
- 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。
- You operate the mechanism by winding this handle. 操纵这台机器要转动这个把手。
- 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。
- The watch has delicate mechanism. 这块表有精细的机械装置。
- 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。
- Let's examine into the basic mechanism involved. 让我们把有关的基本结构搞搞清楚。
- He is weak with hunger, so I have to support him. 他饿得没有力气，我得搀着他。
- The reproductive quality of audio tapes has improved enormously. 录音磁带的复制质量有了很大改进。
- 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。
- The patient is too weak to speak. 病人太衰弱了，不能说话。
