This system is used to pump water into the core, low pressure safety injection and high pressure safety injection.
这个系统是用来将水抽到核心里去，降低压力安全加入和高压力，安全加入。
2
When the price of oil is low, exploration and production is expensive, but companies can rely on retail assets such as gas stations to benefit from the high profit margins at the pump.
油价低伏时，勘探和生产就变得昂贵，但这些公司却能依靠加油站这类零售资产获得高额利润。
3
Some women prefer a pump style shoe, which is a slip on style with a low to high heel and a closed toe that can be rounded, squared or pointed.