The underline stays level with the elbows to a slight upcurve at the flank.
下腹曲线水平,从肘部到腰窝略微提。
The underline stays level with the elbows to a slight upcurve at the flank.
下腹曲线水平,从肘部到腰窝略微提。
An avocet has a long, strongly upcurved bill which contains a complex and highly specialized system of lamellae capable of filtering out small food items.
我找了一下网路资料,似乎也没有讨论他嘴弯因文献,可能有很久以前,太好找了。
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