Traveling by train is often cheaper than flying.

乘火车旅行通常比乘飞机便宜。

同一单元的其他句子

• We are planning a trip to the Great Wall next month.我们计划下个月去长城旅行。
• Have you ever traveled abroad by yourself?你曾经独自出国旅行过吗？
• She packed her suitcase with clothes and a camera.她把衣服和相机装进了行李箱。
• Don't forget to book a hotel before you arrive.到达之前别忘了预订酒店。
• The scenic spots in Guilin are truly breathtaking.桂林的景点真是令人叹为观止。