书籍 Top Notch 1B - 第 9 单元 - 第 4 课

a system or method for carrying people or goods from one place to another by cars, trains, etc.

something that causes difficulties and is hard to overcome

an unexpected and unpleasant event that happens by chance, usually causing damage or injury

(of an object) powered by machinery or an engine

to fail to catch a bus, airplane, etc.

a series of connected carriages that travel on a railroad, often pulled by a locomotive

a scheduled journey by an aircraft

feeling sick or nauseous due to the motion of the ship or boat one is traveling with

feeling sick because of the motions experienced while traveling in a car

feeling nauseous and sick when on a moving aircraft