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pectoral fin的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
Noun:
-
either of a pair of fins situated just behind the head in fishes that help control the direction of movement
pectoral fin的用法和樣例：
例句
用作名詞 (n.)
- Winglike pectoral fins extend along the sides of the head.
翼狀的胸鰭沿頭的兩側延伸生長。 - Oddly enough, this ventilation shift may have kicked off the gradual morphing of the shoulder girdle and pectoral fins.
奇怪的是，這呼吸上的改變有可能啟動了前肢帶與胸鰭的形態逐漸改變。
