turn about

1.The chauffeur turned the sedan about.

司机把轿车掉头。

2.In order to decrease the system Inveracious Alarm, the alarm restraining can be done when the driver turn about, loose accelerograph and apply the brake.

为了降低的虚警率，在驾驶员采取转向、松油门制动时均实施了报警抑制。