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Your baby’s heart begins to beat and pump blood this week.

这一周婴儿的心脏将会开始跳动和供血。

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Uttar Pradesh has three treadle pump manufacturers and more than seventy-three thousand pumps.

VOA: special.2009.08.17

You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.

我们用力很大,于是压缩得很快,打气筒内外热传递的速度,与之相比要慢得多。

麻省理工公开课 - 热力学与动力学课程节选

You're taking the air inside of the pump and you're compressing it. You're doing it so fast that there's not enough time for heat to come out of the gas that's inside the pump towards the walls of the pump.

你把空气吸进气筒里并且压缩它,你的动作很快以至于,没有足够的时间让热量,从气筒里面跑出来,传递到气筒壁上。

麻省理工公开课 - 热力学与动力学课程节选

Huang assumes that Beijing can reverse course and pump money into the economy if needed.

FORBES: China's Economy: The Correction History Will Remember

The Fed will thus feel less pressure to lower rates and pump in more liquidity.

FORBES: Fact and Comment

Crew members tried to plug the tear with wooden pegs and pump the water out.

BBC: Boat sinks after stricken tug crew rescued off Devon coast