PTE Re-tell Lecture 真实讲座练习题:宇宙中的基础推力

在PTE中,无论是Summarise Spoken Text 还是 Re-tell Lecture的考题大都是从真实的讲座或者演讲中截取的中间经常经常夹杂很多不同的环境音.很多同学都反映有时未必是听不懂,而是听不到. 鉴于此,墨尔本悉尼文波雅思PTE专门为大家总结了真实讲座的PTE练习音频,相比新闻音频来说,整体更加接近PTE考试的真题,内容方面,我们也会为大家提供考试中存在的近似题,最近我们会持续更新,敬请期待!

There are four fundamental forces at work in the universe. Some of them are very familiar from everyday life, some of them are not, so we all know about gravity, that’s one of the four forces, it’s what keeps us ankles to the surface of the earth, keeps the Earth in orbit around the Sun. There is another force that we’re very familiar with, which is the electromagnetic force, that is the force that is responsible for the electricity, electric currents for light, for the sun’s light, that’s electromagnetic radiation coming from the Sun to the Earth. There are two other forces though, that are somewhat less familiar, they are the nuclear forces. They are forces that are at work within the nuclear atoms. One of those forces is called the strong nuclear force, that really is the force that bides protons to proton, bides the corks inside of the protons and neutrons keeping them from flying out. The other nuclear force is called the weak nuclear force. And that’s a force that predominantly we know of because it’s responsible for radio activity, radioactive decay. So those four forces, strong nuclear force, weak nuclear force, electromagnetic force and gravitational force, those are the forces that work in the universe.


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