您要查找的是不是：
- Are they travelling by bus? No, they aren't. 他们要坐公共汽车旅行吗?不,他们不是。
- Are they travelling by boat? Yes, they are. 他们要坐船旅行吗?是。他们是。
- Are they travelling by car? Yes, they are. 他们要坐小汽车旅行吗?是的,他们是。
- Are they travelling by plane? No, they aren't. 他们要坐飞机旅行吗?不,他们不是。
- Are they travelling by plane? No. They're travelling by bird. 他们要乘飞机旅行吗?不,他们将骑鸟旅行。
- It's wrong to travel by bus without pay your fare. 乘公共汽车不买票是不对的。
- When visiting London I like to travel by bus. 我游览伦敦时喜欢坐公共汽车。
- It'll work out cheaper to travel by bus. 算来还是乘公共汽车便宜些。
- Sooner than travel by bus, I'd prefer to a train. 我宁愿坐火车也不愿坐汽车旅行。
- People travel by plane, by train, by ship, by bus. 人们旅行的飞机，火车，船只，公共汽车。
- Is it convenient to travel by bus? 乘公共汽车旅行方便吗?
- Are they travelling by car? 他们要坐小汽车旅行吗？
- It is the cheapest thing to travel by bus here. 在这里坐公共汽车旅行是最便宜的了。
- They travelled by rail to the coast and thence by boat to America. 他们乘火车到海岸，再从那里乘船去美国。
- They travelled by day and stayed at hotels by night. 他们白天行路,晚上在旅馆过夜。
- She has to spend about two hours travelling by bus,day in,day out. 她每天都不得不在车上耽搁两个小时，天天如此。
- They traveled by train to the coast and thenceforth by boat to China. 他们乘火车到海岸，再从那里乘船到中国。
- It's wrong to travel by bus without paying your fare. 乘公共汽车不买票是不对的。
- They travelled by day and stay at hotel by night. 他们白天行路，晚上在旅馆过夜。
- They traveled by different roads. 他们走着不同的道路。
