Valerce
原子价(化学)
🗣️ 情景例句
Thank you, no.
谢谢， 不用了。
Nothing must be done hastily but killing of fleas.
除非消灭跳蚤，做事不必急躁。
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。