adj. retractable ; retractile ; retractible
在芬兰建造的海洋绿洲号游轮可缩回巨大的烟囱，这样在环游世界时就可从桥下穿过。
Oasis of the Seas, which was built in Finland, is so big its exhaust stack retracts so it can pass under bridges as it travels the world.
标准橡皮筋由交错连接的长链聚合物制成，能拉伸至原先长度的几倍，释放后可缩回原型。
Standard rubber bands, which can stretch up to several hundred percent then snap back into shape, are made from long chains of cross-linked polymers.
标准橡皮筋由交错连接的长链聚合物制成， 能拉伸至原先长度的几倍，释放后可缩回原型。
Standard rubber bands, which can stretch up to several hundred percent then snap back into shape, are made from long chains of cross - linked polymers.
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