Sent_en: 2zh It is not yet clear what caused the bus to swerve off the road, but as the crash occurred at 6:30 a.m. local time the driver may have fallen asleep at the wheel.
Sent_yy: 现在仍不清楚是什么导致车辆翻出道路，但是基于车祸发生在当地早上6点30分，司机可能是在驾驶时睡着了。