Extra care must be taken to be sure that water does not cut through any of the ridges between contour furrows.

要格外细心以确保水流不会穿越等高沟间的田埂。

youdao

Extra care must be taken to be sure that water does not cut through any of the ridges between contour furrows.

要格外细心以确保水流不会穿越等高沟间的田埂。

youdao