在两个小时中，他们反复听了3000遍，之后他们就可以在测试中准确地分辨出80％的心脏跳动声，相比听力练习前提高了30％。
About two hours and 3,000 playbacks later, the students were able to correctly identify 80 % of the heart sounds on a test—up from 30 % before the practice listening session.
又何况，这老门槛迎来的并不是它旧日的主人，它听到的大抵是游人的感慨和照相机的快门跳动的“咔嚓”声。
Moreover, this old threshold is not ushered in its old master, it is probably to hear the feelings of visitors and the camera's shutter beating the "click" sound.
虽然没有一丝微风，海面也没有一点波浪，但那轰隆声却如此巨大，以致我的心脏快承受不住，要停止跳动了。
Although not even a silent wind blew, and not even a small wave was seen on the sea, the booming was so mighty, that my heart threatened to stop beating.
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