| 词汇 | biological clock |
| 释义 | bioˌlogical ˈclocknoun [c] (technical 术语) a mechanism in plants and animals that controls regular physical activities such as sleeping 生物钟: ◇(figurative 比喻) at 35, kate's biological clock was ticking (= she was beginning to think that she would soon be too old to have children).到 35 岁时，凯特的生物钟开始滴答作响﹙她开始觉得她很快就会年龄大得不宜生育了﹚。 |
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