例句與造句

1. Contour farming is most effective when used with other soil conservation methods like strip cropping, terrace ( agriculture ) farming, and the use of a cover crop.
2. It could be called the interstate highway soil conservation method : clothe the earth with a tight-packed moisture-retaining cover of plants more or less the same height _ one to three feet.
3. It's difficult to find soil conservation methods in a sentence. 用soil conservation methods造句挺難的