当我把男孩们干的事告诉母亲时，她笑得前俯后仰。
When I told Mother what the boys had done, she laughed herself into a state of helplessness.
小丑在台上蹦来跳去的，观众们在座位里笑得前俯后仰。
Thee audience were rolling about in their seats as the clown romped around on the stage.
下面的同学笑得前俯后仰，有的甚至笑的眼泪都流下来了。 。
Thee following classmates laughed their heads off bend forward, and some even laugh tears started to flow down.
动作过程中必须保证上身稳定竖直，禁绝左右侧倾、前俯后仰等借力动作。
Must make sure the upper part of the body stabilizes upend in behavioral course, list of prohibit completely left and right sides, before admire after Fu wait for movement lending strength.
英国的旅行家们叙述可笑的意大利风俗时，总是使的朋友们笑得前俯后仰。
English travelers kept their friends in stitches while describing this ridiculous Italian custom.
想象自己让这件事很精彩地进行着——譬如，观众们因你有趣的故事，笑得前俯后仰等等。
Picture yourself doing an excellent job - the audience laughing at your jokes - you telling captivating stories, etc.
想象自己让这件事很精彩地进行着——譬如，观众们因你有趣的故事，笑得前俯后仰等等。
Picture yourself doing an excellent job - the audience laughing at your jokes - you telling captivating stories, etc.
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