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
When was your reservation?
您预定的是什么时候？
The darkest hour is that before the dawn.
黎明前是最黑暗的时刻。
Can his machine fly?
他的机器能飞吗？