Vainest
a. 自负的( vain的最高级 ); 爱慕虚荣的; 徒劳的; 无用的
🗣️ 情景例句
Not until recently.
最近才考虑到。
It is easier to pull down than build.
败事容易成事难。
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。