Laser cutting of brittle materials is a complicated process of lightinducing heat.
激光切割脆性材料是一个复杂的光致热过程。
2
Turn your bedroom into a sleep inducing chamber, turn the temperature down, install proper curtains which block out the light, and if noise is a problem use earplugs.
把你的卧室装饰成有助睡眠的环境，调低温度，安装合适的窗帘以遮挡光线，如果还有噪音，就戴上耳塞。
3
When your eyes are exposed to it directly, the blue light halts production of the sleep-inducing hormone melatonin and makes you feel more alert.