Somersault

(noun.) an acrobatic feat in which the feet roll over the head (either forward or backward) and return.

(verb.) do a somersault.

戴维斯整理

• The train jumped the track on a short curve, throwing Kruesi, who was driving the engine, with his face down in the dirt, and another man in a comical somersault through some underbrush. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.

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