Most people don't tan after just one day at the beach, or one session in the tanning bed, because it takes time to make melanin.
大多数人只在沙滩上玩一天或者使用晒黑床一段时间不会被晒成古铜色的皮肤，因为黑色素的合成是需要时间的。
You can't reverse all your past exposure, but you can prevent future damage: Wear protective clothing (like long sleeves) and get your tan from a tube, not a tanning bed!
不能改变以往被晒的事实，但是你可以防止今后的伤害：穿保护衣物(如长袖衣服)，通过管子把皮肤变成古铜色，而非晒太阳床。
If you've got a tan, either from the sun or a tanning bed, "it means your skin is damaged," Stein says.
如果你有无论是从太阳晒黑床或一个棕褐色，“这意味着你的皮肤被破坏，”斯坦说。
The principle, system technological process and main equipment used in desulfurization project of flue gas circulating fluidized bed for 100 MW unit in Xiaolong Tan Power Plant are presented.
阐述了小龙潭发电厂100MW机组烟气脱硫工程的工艺原理、系统流程、主要设备等，并结合系统调试过程中发现的问题，对该工艺的运行调试进行了评述。
The principle, system technological process and main equipment used in desulfurization project of flue gas circulating fluidized bed for 100 MW unit in Xiaolong Tan Power Plant are presented.
阐述了小龙潭发电厂100MW机组烟气脱硫工程的工艺原理、系统流程、主要设备等，并结合系统调试过程中发现的问题，对该工艺的运行调试进行了评述。
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