twice

英/twaɪs/

美/twaɪs/

adv.两次;两倍;两遍

例句

New drivers have twice as many accidents as experienced drivers.

新驾驶员所出的事故是老驾驶员的两倍。

I don't know her well, I've only met her once or twice. 

我跟她不很熟；我只见过她一两次。

In summer we have to mow the lawn twice a week. 

夏天我们每周得修剪草坪两次。