Quadrivalent
a. 四价的\\n[医] 四价的
✅ 同义词
🗣️ 情景例句
I've never seen anyone as strict as my boss.
我就没见过像我们老板这么严厉的人。
I can't seem to get to sleep.
我好象睡不着。
Go right back to the beginning.
直接回到起始位置。