Lightpositive
正光电导性
🗣️ 情景例句
To get ahead you'll have to work long hours and take short vacations.
要想出人头地，你必须多工作少休假。
How could you do this?
怎么可以这样？
At the age of twelve years, the human body is at its most vigorous.
人体在12岁时是生命力最旺盛的时期。