You need to check in two hours frontward of flight .

你须要在飞机腾飞前两个小时打点登机手续。

You two go frontward to the movie without me .

你们两个本身去看电影吧，我不想当电灯泡。

Go frontward and do what you like .

干吧，你喜爱干什么就干什么。

Practice sewing backward as well as frontward .

练习向后及向前缝制衣服。