People were awakened rudely by a siren just outside their window.人们被窗外传来的汽笛声猛然惊醒了。It sounds like an air raid siren.那听起来像是空袭警报。Somewhere in the distance a siren hooted.远处某个地方响起了警报声。...
She went solo backpacking for eight months in the Australian outback.她独自在澳大利亚内陆地区进行了8个月的徒步旅行。They went backpacking in Spain last year.他们去年背着背包在西班牙旅行。Your review must be about gear that directly relates to backpacking.你的测...