名詞 dolphin:

1. large slender food and game fish widely distributed in warm seas (especially around Hawaii)
   同義詞：dolphinfish, mahimahi
2. any of various small toothed whales with a beaklike snout; larger than porpoises

1. The head of the dolphin popped up quite near the boat.
   那海豚的頭在離船很近的地方冒出來。
2. The dolphin balanced the ball on its nose.
   海豚用鼻子頂著球，使其保持平衡。
3. We like to see the performance of dolphins.
   我們喜歡看海豚的表演。

dol.phin

n.（名詞）
Any of various marine cetacean mammals, such as the bottle-nosed dolphin, of the family Delphinidae, related to the whales but generally smaller and having a beaklike snout.
海豚：一種海豚科海洋鯨類哺乳動物，如的寬吻海豚，與鯨近似但一般比鯨小且有喙狀吻
Either of two marine game fishes(Coryphaena hippurus or C. equisetis) having iridescent coloring.
鲯鰍：兩種色彩斑斕的海洋捕獵魚（鲯鰍 或 棘鲯鰍）

來源：
Middle English
中古英語
from Old French daulfin
源自 古法語 daulfin
blend of daufin
混合了 daufin
Old Provenôal dalfin
古普羅旺斯語 dalfin
both from Medieval Latin *dalfinus
都源自 中世紀拉丁語 *dalfinus
from Latin delphinus
源自 拉丁語 delphinus
from Greek delphis delfin-
源自 希臘語 delphis delfin-
from delphus [womb (from its shape)]
源自 delphus [子宮（因其形狀而有此意）]