somersault

1. N-COUNT If someone or something does a somersault, they turn over completely in the air. 筋斗

Trained dogs did somersaults on a man's shoulders. 一些受过训练的狗在一个男子的肩膀上翻筋斗。

2. V-I If someone or something somersaults, they perform one or more somersaults. 翻筋斗

His boat hit a wave and somersaulted. 他的船撞上了一个波浪，翻了。