Nitriding
v. 渗氮
🗣️ 情景例句
She's never been happier.
她从来没有像现在这样快乐过。
No man knows when he shall die, although he knows he must die.
纵然知其难免一死，人却难料何时身亡。
There is a journalist and writer living in America whose name is Alex Haley.
有一位住在美国的记者兼作家，名叫亚历克斯·哈利。