sea

英 [siː]   美 [siː]  n. 海;海洋;海面情况;海浪状况
egg英 [eɡ]   美 [eɡ]  n. (鸟类的)蛋;(鱼、昆虫等的)卵;(用作食物的)禽蛋;(尤指)鸡蛋;卵子;卵细胞v. 怂恿;鼓励
sea egg
"sea egg"真正的意思是“海胆”哦~
Sea egg  has high nutritive value. 海胆营养价值高。
at sea
这个短语有两种意思：
1.在海里；在海上（主要指的是乘船）
英英释义：on the sea, especially in a ship, or in the sea
They were lost at sea .他们在海上迷失了方向。
2.  困惑；茫然
英英释义：confused and not knowing what to do
I'm all at sea  with these new regulations.我全然不懂这些新的规章。
put (out) to sea
起航；出海 英英释义：to leave a port or harbour by ship or boat
The freighter has put out to sea.货轮已经出海。
between the devil and the deep blue sea
进退维谷；左右为难 英英释义：in a difficult situation where there are two equally unpleasant or unacceptable choices