常見例句用作名詞 (n.)At most, their forelegs grow vestigial spurs where wing membrane might have been.最終,它們本應(yīng)長爲(wèi)翅膀的前肢會退化爲(wèi)薄膜。Immediately behind the shoulders ribs are flattened enough to allow free movement of the forelegs, becoming rounder behind.肩胛後麪的肋骨立即變平,允許前肢能自由運動,隨後逐漸變圓。 返回 forelegs