A backpack is a Viking helmet - neither should be a crowed train.背包像维京海盗的头盔一样,不应该带上拥挤的火车.He squirmed out of the straps of his backpack.他扭动身体，挣开背包的肩带。Looking back, she feels she should never have hung up her backpack.回首过去...
I've been traveling all day.我整整一天都在赶路。It's difficult to conceive of traveling to the moon.难以想象到月球旅行会是什么样子.A senior courtier said:'He is determined to get his traveling costs down.王室一位高级伺从说, 威廉 王子决心将自己的旅行成本...