Marmag
氧化镁
🗣️ 情景例句
Are you sending it by regular or by speed?
你要寄平信还是快递？
A covetous man is good to none but worse to himself.
贪婪的人对别人毫无好处，对自己却坏处更大。
Come up these steps with me, please, and be careful.
请跟我走上这些台阶，请小心点。