Pharosage
光通量密度, 照度
🗣️ 情景例句
It will take less than 5 minutes to check out.
退房最多只需5分钟。
Will you please measure this window to see how wide it is?
请您测量这扇窗户看它有多宽？
No, he didn't want to leave.but his wife did!
是啊，他是不想离开，可是他妻子要离开。