Bipm
abbr. 国际计量局；国际度量衡局（The International Bureau of Weights and Measures）
🗣️ 情景例句
Did she say why she had to leave today?
她说了她为什么今天非走不可吗？
Fortune is fickle.
天有不测风云，人有旦夕祸福。
What's the weather like in spring?
春季的天气怎么样？