porpoise
US
UK porpoise n: (sea mammal) (海洋哺乳动物)
SC 鼠海豚，小鲸 shǔ hǎi tún，xiǎo jīng
We saw porpoises and dolphins at the aquarium.
porpoise vi: (boat: leap clear of water)
SC 船起伏行驶
The rough waves were causing the boat to porpoise.
porpoise vi: (torpedo: appear above water)
SC 鱼雷窜出水面
The torpedo was porpoising before striking its target.