1)The materials that are recyclable are glass, aluminium, plastic water bottles, metal scrap, different kinds of paper, electronics –computers, cellular phones, keyboards, batteries and other small electronic equipment, textile, wood, wire, cables, plastic product, rubber, etc.
1）可回收的材料有玻璃、铝、塑料水瓶、金属废料、不同种类的纸张、电子产品-电脑、手机、键盘、电池等小型电子设备，纺织、木材、电线、电缆、塑料制品、橡胶等。
2)Landfills can cause air pollution by emitting dust and gases such as methane, carbon dioxide, and etc.
垃圾填埋场通过排放灰尘和气体（如甲烷、二氧化碳等）可造成空气污染。
