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60秒科学:气泡也繁殖,大泡变小泡(有声)

时间:2010-06-10 16:23:23 来源:scientificamerican 编辑:francie 每天三分钟英语轻松学

字号: 大 | 中 | 小　

【词汇解释】

1..shard n. 碎片，薄硬壳

2.rupture n. 破裂，断裂 v. 使破裂

He'll rupture a muscle if he goes on dancing like that!
他要是继续那样跳舞，会跳得皮开肉裂！

He ruptured himself lifting a bookcase.
他抬书柜时出现了疝。

3.retract v. 缩回，收回，否认，撤销

The accused refused to retract (his statement).
那被告拒不撤消(其供述).

The undercarriage on light aircraft does not always retract in flight.
轻型飞机飞行时起落架不一定缩回。

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