The world's most powerful X-ray machines are a byproduct of high-energy physics.
世界上最强大的X光机是高能量物理学的一种副产品。
2
The supernova explosions that create and spread heavy elements also unleash a torrent of high-energy radiation: gamma rays, X-rays, and ultraviolet light.
创造并散播重元素的超新星爆发同样释放出一股高能辐射的激流：伽玛射线，X射线，紫外线。
3
You can't decide to become an engineer if it requires X number of years of calculus that you never took in high school.