Since I had promised to focus on the economy like a laser beam, I began with that.

由于我曾许诺要像关注激光束一样关注经济，我就那样开始了。

This gives you a little bit of an idea of just how many individual photons there are in a laser beam of light.

这让你对一束激光中有多少个光子有了一点概念。

This gives you a little bit of an idea of just how many individual photons there are in a laser beam of light.

这让你对一束激光中有多少个光子有了一点概念。

During tests over several days, the pointer or tracker tracked an IR source and directed a laser beam at that source.

在几天的测试中，指示器或跟踪器跟踪一个红外光源，并引导激光束击中目标。

Raman devices work by shooting a laser beam at an object.

拉曼扫描仪靠向鉴定对象发射出的激光束工作。