Blomstrandine
钇易解石
🗣️ 情景例句
Alexandra.
Alexandra。
It is easier to raise the devil than to lay him.
养虎易，驯虎难。
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？