Bialternant
[数]双交替式
🗣️ 情景例句
An oil tanker ran aground and lost about 15,000 gallons of gas into the sea.
一般油轮搁浅，把 15000 加仑油倾泻在海里了。
If I buy tha car,I'll have to borrow some money.
如果我买了那汽车，我将不得不借一些钱。
You are so considerate.
你真有心。