first有1音节: [fɜ:st]

The first problem is oil .第一个麻烦是石油。

Diet was a first step .控制饮食是第一步。

First impressions are always important .第一印象总是重要的。

The first is higher incomes .首先是国民收入提高。

Commit to paying yourself first .首先承诺付给你自己。