Covalent
a. 共有原子价的, 共价的
🗣️ 情景例句
and I promise you I won't forget.
我向你保证， 我不会忘的。
Without health, life is not life, life is lifeless.
如无健康的身体，生活就不成为生活，人生也毫无生气。
They're said to be very good. What time does the performance start?
据说他们很棒。演出什么时候开始？