沿着这条街走，然后向左拐（英语翻译）

Go along this street ,then turn left

沿着。。走 是walk down...或者walk along....也可以说成go down...或者go along
向左拐是turn left 或者 take a left
所以是：Walk/go along/down this street/road,and then turn left/take a left

沿着这条街走，然后向左拐
Go along this street, and turn left

Walk along(或down) the street,then turn left.

............(金山快译的劳动成果 ...[= =])

译:
Along this street walk, then turn left

Walk along this street and turn left.