Blau
n. （德）蓝色
🗣️ 情景例句
I called channel five.
我打电话给了第五频道。
There have been a lot of changes here in the last 20 years.
在这20年里这里有很多变化。
One day, the man downstairs went to talk to the man. He went upstairs and knocked the door.
一天，楼下人去找楼上人谈谈。 他上楼敲门。