Geramine
洁尔灭, 氯化烷
🗣️ 情景例句
and how hard it is
他还说这件事很难
In prosperity think of adversity.
居安思危。
As the floods had put the telephone out of order, we could not find out how they were managing.
由于洪水造成了电话中断，我们无法了解他们情况。