phase in

漢語翻譯

英文解釋：

動詞 phase in:

1. introduce gradually

例句：

1. The production lines were phased in last year.
   這些生產線，是去年逐漸引進的。
2. The use of lead-free petrol is now being phased in.
   無鉛汽油的套用現正逐步推廣。