词汇	drainage boundary
释义	drainage boundary 排水边界
随便看	have nothing in one have nothing left have nothing of have nothing of the have-not have not a bean have not a brain in one's head have not a clue Have not a clue have not a dry stitch on have not a dry stitch onone's back have not a dry stitch on one's back have not a dry thread on have not a dry thread on one have not a dry thread on someone have not a farthing have not a grain of have not a leg to stand on have not an atom of have not been have not been able to have not been around have not been to have not been together long have not completed the formalities