changing into nitrate

例句：

1. 1. The soil is changing into nitrate as the rainwater washes it away.
   随着雨水冲刷，土壤正在转变为硝酸盐。
2. 2.The farmer changed his cropping method from traditional to modern to increase yield.
   农民改变了他的耕种方法从传统到现代以提高产量。
3. 3.The process of turning wood into lumber involves removing the bark and converting it into a more usable form.
   将木材转化为木板的过程包括去除树皮并将其转换为更有用的形式。