Nitronium
硝离子
🗣️ 情景例句
Excuse me, Susan.
对不起 ，Susan。
A fool never learns.
傻瓜永远学不会。
A temporary rudder was made on board from spare planks and it was fitted with great difficulty.
船员用备用的木板在船上赶制了一只应急用的舵，并克服重重困难将舵安装就位，