鞋的作用是什么? 它们是保护脚的.What's use of shoes? They are the protection for feet.它们是保护脚的.They are the protection for feet.建筑工人需要穿坚固耐用的工作靴来保护脚.The construction workers need to wear heavy - duty work boots to protect their feet...
由于大雨,伊利湖水正在上涨.Lake Erie is filling with the heavy rain.1970年工业废物污染了克利夫兰附近的伊利湖湖面.Industrial waste burned on the surface of Lake Erie near Cleveland in 1970.共有五个大湖泊: 苏必利尔湖, 密歇根湖, 休伦湖, 伊利湖和安大略湖.There are five lakes: Superio...