当心

be careful; mind; watch; beware; take care; watch out; look out; heed; take heed; tread carefully; pay attention; keep an eye out; in the middle; in the centre; in the midmost; careful; cautious; watchful; alert; wary

汽车

car; automobile; auto; wheel; vehicle; motor vehicle; motorcar; set of wheels; motor car; automotive; motor; motoring; by car