I slowly zipped and locked the heavy black nylon bags.我慢慢地把那些沉重的黑色尼龙袋的拉链拉上并锁好。Europe's largest producer of nylon is based in Belgium.欧洲最大的尼龙制造商总部设在比利时。There may even be some wire or nylon biting into the flesh.甚至可能有...
该州十一所学校是用一种濒临灭绝的海洋动物——海牛来命名的.Eleven honor the manatee, an endangered sea animal found in that state.我们看了海豚 、 海牛 、 海狮和鲸的表演.We watched dolphin, manatee, sea lion and whale shows.海象的外形是从海牛物种里演化而成.The shape of Walrus evolved...
A pair of teenage boys were smoking cigarettes...两个十来岁的男孩正在吸烟。Most pregnant women remain off cigarettes while carrying the child.大多数孕妇都在孕期戒了烟。The risk of developing heart disease increases with the number of cigarettes s...