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- The undifferentiated bump or protuberance that appears at the initial formation of the paired fins. 芽胞在偶鳍的基部出现的肿块或突起。
- ichthyopterygium Paired fin skeletons of fishes; girdle. 鳍型肢鱼的偶鳍骨骼；肢带骨。
- Most species have paired fins and skin covered with either bony or toothlike scales. 多数的鱼都有一对鳍和覆盖在皮肤上的鳞。
- Tropical species are often brightly colored. Most species have paired fins and skin covered with either bony or tooth-like scales. 热带的品种常有鲜艳的颜色。多数的鱼都有一对鳍和覆盖在皮肤上的鳞。
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
- Fish are aquatic vertebrate animals that are typically ectothermic (previously cold-blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. 鱼是水生脊椎动物，典型特征是属冷血动物，全身有鳞片，有一对鱼鳍或几个不成对的鱼翅。
- A feather, wing, fin, or similar appendage. 羽、翼或鳍状结构羽、翼、鳍或类似的悬着物
- After dinner we paired off and went to dance. 饭后我们成双成对地跳舞去了。
- The shark's fin sliced the water. 鲨鱼的背鳍像刀样迅速划破水面。
- and in the paired fins, the fin girdles, basals, and radials. 而且在偶鳍，包括腰带，基础骨，与辐射骨。
- Don't mix up this pair of synonyms. 别把这两个近义词混淆了。
- He wears an oily old pair of jeans. 他穿着一条沾满油污的旧牛仔裤。
- This pair of scales is not in equilibrium. 这个天平不平衡。
- This pair of trousers is too tight for me. 这条裤子我穿太紧了。
- She splashed out on a new pair of shoes. 她心血来潮买了一双新鞋。
- The newly married couple are really a happy pair. 那对新婚夫妇真是快乐的一对。
- Billy has a pair of new trousers. 比利有一条新的裤子。
- The shark's dorsal fin was cut off by the fisherman. 鲨鱼的背鳍被渔夫割了下来。
- A new pair of shoes wouldn't come amiss. 新鞋不会不称心的。
