Hcb
abbr. hard-covered book 精装书; hard-core base 核心基地; hollow concrete block(s) 空心水泥砖; heating and cooling of buildings 建筑物的保暖和降温
🗣️ 情景例句
That's a relief.
现在我放心了。
It doesn't matter to me.
两个都可以。
A clear conscience laughs at false accusation.
只要问心无愧，无端的指责可以一笑置之。