zone at risk的用法和樣例：
例句
- Gas-masks had been issued to everyone before they entered the danger zone.
在他們進(jìn)入危險區之前，每人都發(fā)了防毒面具。 - Any time you need to shout to be heard by someone near you, your hearing is most likely to be in a decibel danger zone.
任何時(shí)候你為了讓旁邊的人聽(tīng)到你都需要大聲喊叫，這時(shí)候你的聽(tīng)力都很可能處于一個(gè)分貝危險區。
