Nonvisibility
不可见性
🗣️ 情景例句
Oh, let's go upstairs and prepare Grandpa's room.
对了，我们上去准备一下爷爷的房间。
When the weather is hot, we turn on the air conditioner.
天热的时候就开空调。
He always meant to go back on day, but not to stay.
他总想将来回国看看，但却不愿长期住下去，