Quadrivalence
n. 四价\\n[医] 四价
🗣️ 情景例句
Have a smooth flight.
一路顺风。
In life, as in chess, forethought wins.
人生如下棋，多谋得胜利。
But how would we find such a planet? At present, there is no telescope in existence that is capable of detecting the presence of life.
但是，我们如何才能找到这样一颗行星呢？现在，没有一台现存的望远镜可以发现生命的存在。