Rhc
abbr. rubber hydrocarbon 橡胶烃
🗣️ 情景例句
When the bough breaks,
树枝若折断
To youth I have but words of counsel -- work, work, work.
对青年人，我要奉劝几句话∶工作，工作，再工作。
He telephoned the office yesterday morning and yesterday afternoon.
他昨天上午和下午把电话打到了我的