forelegs的用法和樣例：
例句
用作名詞 (n.)
- At most, their forelegs grow vestigial spurs where wing membrane might have been.
最終，它們本應長(cháng)為翅膀的前肢會(huì )退化為薄膜。 - Immediately behind the shoulders ribs are flattened enough to allow free movement of the forelegs, becoming rounder behind.
肩胛后面的肋骨立即變平，允許前肢能自由運動(dòng)，隨后逐漸變圓。
