trekker 背包客，长途跋涉旅行者

hiker 徒步者（较 trekker 要短些行程）

precipitation 降水（指各种形式的降水，包括冰雹、雨水、雪等）

township 乡

as of 自...起，截止...

As of Sunday, the extremely hot weather persists 10 days.