向前走至第3个十字路口后左拐在第一个十字路口处左拐 (英语)

Go straight to the third crossing and turn left at the first crossing and turn left.
这是最最最简单的翻译了，我自己翻的，我们小学也有得学呀！

go ahead to the third crossing and turn left,go along this street and turn left at the first crossing

Go along this road and take the third crossing on the left
这是“向前走至第三个十字路口左拐” 至于后边的第一个十字路口把那个"third" chang into "first"就行了啊

Walk straight till you get to the third intersection, turn left, keep going, and then turn left again at the first intersection.