And if it is stronger, the heart rate will drop, so that the heart puts less effort into pumping the same amount of blood.

如果心脏更强壮了，心率就会下降，因此，在心脏向外输送与之前同等数量的血液时，它就不用再费那么大力气了。

youdao

Workers have been pumping sea water into reactors in an effort to prevent further damage.

工人尽力给反应器注入海水以避免进一步的损失。

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BP oil company has begun pumping heavy mud into a blown-out well in the Gulf of Mexico in an effort to seal it off permanently.

能源公司BP开始对墨西哥湾破损油井注入大量泥浆，试图永久封堵这口漏油的油井。

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Central banks in the U.S., Europe and Japan have been pumping money into their economies in an effort to stimulate growth, buoying global financial markets.

WSJ: Central Bank Money Hinders Standard Chartered

The effort, called a "top kill, " involved plugging the ruptured deep-sea well by pumping heavy drilling fluid into it from the surface, nearly a mile above.

CNN: First criminal charges filed in BP oil spill