您要查找的是不是：
- Have you turned off the water valve? 你关掉水阀了吗？
- We must maintain a firm attitude. 我们必须采取坚定的态度。
- The maintaining of one vice costs more than ten virtues. 保持一桩恶事的代价超过于十件好事。
- We need an eye bolt to fit this valve. 我们需要一个有眼螺栓来固定这个阀门。
- How many military bases are they maintaining on foreign soil? 他们在外国保持多少个军事基地？
- He is too poor to maintain his family. 他太穷了，无法养活家人。
- A substance believed to maintain life indefinitely. 长生不老药被认为可以使生命无限的物质
- He soon detected the faulty valve. 他很快查到了出毛病的阀门。
- The plan is merely designed to maintain their nuclear superiority. 制定这个计划只是为了保持他们的核优势。
- The factory cannot maintain current levels of production. 该工厂不能保持目前的生产水平。
- They expended large sums of money in maintaining this beach. 他们花去大笔的钱维护这个海滩。
- Operating by means of suction or by maintaining a partial vacuum. 抽真空的用吸取的方式或用维持部分真空的方式来运作的
- The pump sucks air out (of the vessel) through this valve. 这台泵通过这个阀门把(容器中的)空气抽出。
- He can't maintain enough equilibrium to ride a bike. 他骑自行车不能保持平衡。
- The exhaust valve on my car have burn out three times. 我车子上的排气阀已烧坏三次。
- Part of my job is to maintain good relationship with our suppliers. 我的部分工作是同我们的供应商保持良好的关系。
- The exhaust valve on my car has burnt out three times. 我车子上的排气阀已烧坏三次。
- The capturing of prey as a means of maintaining life. 捕食为生以捕获猎物作为维持生命的方式
- We must try to maintain the equilibrium of supply and demand. 我们必须努力保持供求均衡。
- Composed of a single valve or piece. Used of a shell. 单瓣的由单个瓣膜或部分组成的。用于壳
