Hcfcs
abbr. hydro-chlorofluoro-carbon 【化学】氢化含氯氟烃
🗣️ 情景例句
I know what you mean.
我懂得你的意思。
By doing nothing we learn to do ill.
懒散学为非。
You may have heard of Birth Control.
你们也许听说过控制人口出生的措施。