Casehardened
a. 经热处理变硬的, 无感觉的, 麻木不仁的
🗣️ 情景例句
This method should be widely promoted.
这种方法应该推广。
Don't you think we should add a sentence here like this?
难道你不觉得我们应该在这儿加上一句话？
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。