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。
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。
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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