The heart is a muscular pump at the center of the cardiovascular (circulatory) system.

心脏位于心血管(血液循环)系统的中枢，相当于一个由肌肉组织构成的泵。

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Pump wear parts are mainly drive shaft and bushing, passive gear center hole and shaft pin, pump shell lumen and gear, gear face and pump cover, etc.

齿轮泵的磨损部位主要有主动轴与衬套、被动齿轮中心孔与轴销、泵壳内腔与齿轮、齿轮端面与泵盖等。

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The water pump USES centrifugal force to send fluid to the outside while it spins, causing fluid to be drawn from the center continuously.

当水泵转动时，其离心力把液体甩出来，从而就不断地从中心吸水。

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Last week, CNN reported that two shopping centers, Promenade Temecula in southern California and Short Pump Town Center in Richmond, Va.

FORBES: Update: Malls Pull Back from Tracking Shoppers Via Their Cells, But Guess Who Else Asked About the Technology

Located on the Space Coast (72 miles of coastline famous for the Kennedy Space Center), Melbourne offers plenty of opportunities to pump youthful energy back into your veins.

BBC: Searching for Florida��s fountain of youth