Ocean floor
出国 Abroad海底,洋底
🧩 词语组成解析
ocean
['oʃən]
n. 洋;海洋;大海;（地球上划分出的）洋;
floor
[flɔr]
n. 地面，地板;楼层;底部;议员席;
vt. 铺地板;击败，打倒;
🗣️ 情景例句
You'd better be careful.
你要小心一点。
Who told you?
谁告诉你的？
One is the general atmosphere of secrecy in which it is carried out,
一是科研工作中普遍存在的保密气氛；