大家帮忙翻译下，谢谢了，那位好心人愿意的话，感激不尽！！！我会追加分数的。

Question

激光是20世纪以来，继原子能、计算机、半导体之后，人类的又一重大发明，被称为“最快的刀”、“最准的尺”、“最亮的光”和“奇异的激光”。它的亮度为太阳光的100亿倍。它的原理早在 1916 年已被著名的物理学家爱因斯坦发现，但要直到 1958 年激光才被首次成功制造。
什么是激光？它有哪些特点？
“光受激发射”叫做激光
激光特点：
（一）定向发光
普通光源是向四面八方发光。要让发射的光朝一个方向传播，需要给光源装上一定的聚光装置，如汽车的车前灯和探照灯都是安装有聚光作用的反光镜， 使辐射光汇集起来向一个方向射出。

Answer 1

英语：
Since the laser is the 20th century, following the atomic energy, computers, semiconductors, after another great invention of human beings, known as "the fastest knife," "the most accurate of the foot," "the brightest light" and "exotic laser," . Its brightness of the sun's 10 billion times. Its principle as early as 1916, the famous physicist Albert Einstein has been found, but not until 1958 was only the first successful laser manufacturer.
What is a laser? What are the characteristics of it?
"Light by stimulated emission," is called the Laser
Laser Features:
(A) directional light-emitting
Ordinary light source is emitting in all directions. Let the light emitted in one direction communication, need to source a certain condenser fitted with devices such as car headlights and searchlights were installed condenser mirror effect, so that radiation is pooled together in one direction injection.

Answer 2

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