他们只是大概知道可用水的总量。They have only a vague idea of the amount of water available.布赖恩用水冲了把脸，然后刷牙。Brian splashed water on his face, then brushed his teeth.从汽油耗尽到用水紧缺，所有可能发生的事情都考虑到了。Every eventuality is covered, from running out...
用水泥砌牢石头.Stones are bedded in cement.她用水泥抹墙，并趁它还没干时粘上贝壳。She rendered the walls in cement and, while it was still wet, applied the shells.这个砖房的前面用水泥抹的.The front of the brick house was faced with cement....