Densograph
黑度曲线
🗣️ 情景例句
On a studect visa, full-time work is not permitted.
持学生签证的话，不允许做全职工作。
Man is the artificer of his own happiness.
人之幸福，自己创造。
That's all right.Goodbye.Enjoy yourself!
不用谢。再见。好好玩吧！