求翻译：crane: a large machine used to lift and move heavy objects by means of a hook attached to cables suspended from a supporting,usually movable,beam.是什么意思？

待解决

悬赏分：1 - 离问题结束还有

crane: a large machine used to lift and move heavy objects by means of a hook attached to cables suspended from a supporting,usually movable,beam.

问题补充：

匿名	2013-05-23 12:26:38 起重机：用来提升和移动重物的钩大机连接到电缆暂停从支持，通常是可移动的梁。

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