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
Go for it.
去试试吧。
Hawaiians are used to the rumblings of the volcano.
夏威夷的人已经习惯于火山的爆发声了。
Control yourself!
克制一下！