Alice was already in the front seat, and Edward was starting the engine.

爱丽丝已经坐在了前座上，爱德华发动了引擎。

The onlookers motioned to the driver not to grind up the bird by starting the engine.

所有围观的人都向公共汽车司机打手势：不要开车！不要轧着鸽子！