After driving in the roundabout, the vehicles enter the left turn lane, the through lane, or the right turn lane, namely a helical lane corresponding to a destination exit.

四条主干道的进入交叉路口的车道划分成左转车道、直行车道和右转车道，并分别与对应的螺旋形车道衔接；

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Turn left at the crossroads into Clay Lane.

在十字路口向左转到克莱路上。

《柯林斯英汉双解大词典》

We were in the middle lane making a loping left turn on the highway.It was raining hard; I had the wipers at their fastest setting.A car crept up from the right to pass.

那时天下着大雨，我将雨刮器开到最大频率，高速路上我们正准备左转，一辆车缓慢地从右侧超车。

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The A3 will have a segregated left turn lane created at the Ham Barn roundabout, Petersfield, which will also get an additional lane.

BBC: Jobs boost as ?13m spent on Hampshire's main roads

New traffic lights and a new dedicated left hand turn slip lane on the Longman Roundabout.

BBC: Kessock Bridge roadworks: ?1.8m plan to ease disruption

After an hour, he left the wide state highway for a snaky blacktop road, and deep in the woods he made a left turn down a gravel lane that ran as straight as a railroad for ten miles.

NEWYORKER: Idols