Bipm
abbr. 国际计量局；国际度量衡局（The International Bureau of Weights and Measures）
🗣️ 情景例句
I understand.
我可以理解。
Did I hear you right?
我有没有听错？
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。