公路系统沿线有大型商场和快餐店。Megamalls and fast food restaurants line the highway system.定期航班的数量正让空中交通指挥系统不堪重负。The volume of scheduled flights is straining the air traffic control system.全球性生态保护工作很可能会和地方生态系统存在矛盾。Global ecological eff...
Australia is the hometown of kangaroos.澳大利亚是袋鼠的故乡.There are all sorts of animals, including bears, pigs, kangaroos, and penguins...有各种各样的动物，包括熊、猪、袋鼠和企鹅。Kangaroos are indigenous to Australia.袋鼠为澳大利亚本地的动物.There are all sor...