Malleablizing
韧铁退火, 脱碳
🗣️ 情景例句
Thank you.
谢谢 。
Who has never tasted bitter, knows not what is sweet.
不尝黄连苦，怎知蜂蜜甜。
The students are going to take the test in two days' time.
学生们准备在两天后就接受测验。