Here an embryo of 8 weeks just over an inch long makes its first movements.
这是一个八周的胚胎,长度刚刚超过一英寸,正在开始它的第一次运动。
Though Swing is now popular worldwide, it first appeared alongside the jazz movements of the 1920s and 1930s in New York City.
虽然摇摆舞现在风靡全球,但它最初是在20世纪20年代至30年代间的纽约爵士乐运动中出现的。
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