Quadrivalency
n. 四价
🗣️ 情景例句
You're just wasting your breath.
你在白费口舌。
I have a toothache.
我牙好痛。
The great racing driver, Sir Malcolm Campbell, was the first man to drive at over 300 miles per hour.
杰出的赛车选手马尔科姆。坎贝尔爵士是第一个以每小时超过300英里的速度驾车的人。