Polysleeve
多套管的
🗣️ 情景例句
Happy birthday.
生日快乐。
That's too good to be true.
天底下哪有这种好事。
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？