您要查找的是不是：
- 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。
- Are they travelling by boat? Yes, they are. 他们要坐船旅行吗?是。他们是。
- 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 car? Yes, they are. 他们要坐小汽车旅行吗?是的,他们是。
- Mary would rather travel by train than by plane. 玛丽宁可乘火车而不愿乘飞机旅行。
- You are allowed to carry on a handbag when you travel by plane. 乘飞机旅行时，你可以随身带一个手提包。
- Nowadays people travel by plane. 如今人们乘飞机旅行。
- It is much faster to travel by plane. 乘飞机旅行速度更快。
- It is very fast to travel by plane. 乘飞机去旅行很快。
- Are they travelling by car? 他们要坐小汽车旅行吗？
- I would rather travel by coach or by plane. 我宁愿坐长途客车或飞机旅行。
- 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。
- Does your family like to travel by plane? 你们家喜欢坐飞机旅行吗?
- They travelled by day and stayed at hotels by night. 他们白天行路,晚上在旅馆过夜。
- It's much faster to travel by plane. 乘飞机旅行速度快得多。
- I would rather travel by train than by plane. 我宁愿乘火车旅行而不愿坐飞机。
- They argued about traveling by train versus traveling by plane. 他们争论乘火车旅行好还是坐飞机旅行好。
- 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 is expensive to travel by plane. 坐飞机旅行很费钱。
