"请你说慢点"译英....

Please talk slower!

Please speak slower!

Speak slowly,please. (简单一点儿说)
Would you please speak slowly? (委婉些)

excuse me but i can't follow you!
或者简单点直接说 excuse me!
相信我，我看过很多原生电影，都是这么翻译。

slower please

Please speak more slowlier.

Slow down,please.