pelvic fin
US /ˈpel.vɪk fɪn/
UK /ˈpel.vɪk fɪn/

名词
1.
腹鳍
either of a pair of fins on the underside of a fish's body, typically behind the pectoral fins, that help control direction and stability
示例:
•
The fish used its pelvic fins to maintain balance in the current.
这条鱼用它的腹鳍在水流中保持平衡。
•
Sharks have two pelvic fins located near their cloaca.
鲨鱼有两个位于泄殖腔附近的腹鳍。
同义词:
在 Lingoland 学习这个单词