n. 潜艇;海底生物;
adj. 水下的,海底的;
vt. 用潜艇攻击;
vi. 驾驶潜艇;划入底下;
sub在下面+marine海洋的→在海下面→海底的;潜水艇
🗣️ 情景例句
I don't think he is cut out for the job.
我认为他不适合做那份工作。
Hope springs eternal (in the human breast).
希望会产生,永远无穷尽。
After her departure, Aunt Harriet discovered that there were piles of empty wine bottles of all shapes and sizes neatly stacked in what had once been Bessie's wardrobe.