Macroconcentration
常量浓度
🗣️ 情景例句
Open it, please.
请打开看看。
After a successful career in business,he was appointed ambassador.
在生意的成功以后，他被指定为大使。
Oh! And do you use American or British spelling?
噢！那你们是采用美国拼法还是英国拼法呢？