Cen
abbr. 欧洲标准化委员会（The European Committee for Standardization）
🗣️ 情景例句
Lots of people are tired of higher taxes.
许多人对于增税很厌烦。
How do you spell your last name?
你的姓是怎样拼写的？
and if a single curved glass would distort nature, how much more would a pair of them?
何况一片曲面镜就可歪曲自然，那么伽利略的两片曲面镜对自然的歪曲又该多大呢？