They don't really have so many of the extensor muscles that are the weight-bearing muscles; instead, they rely on retractor muscles to pull themselves along.
他们实际上并没有那么多作为负重肌肉的伸肌;相反, 他们依靠牵开器肌肉来拉动自己。
单词 | extensor muscle |
例句 |
原声例句
TED演讲(音频版) 2019年5月合集 They don't really have so many of the extensor muscles that are the weight-bearing muscles; instead, they rely on retractor muscles to pull themselves along. 他们实际上并没有那么多作为负重肌肉的伸肌;相反, 他们依靠牵开器肌肉来拉动自己。 |
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