每个相邻基因之间是不能编码蛋白质的dna；相反，它起着基因启动-关闭开关的功能。

Contiguous to each gene is DNA that doesn't code for protein; instead, it functions as the gene's on-off switch.

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短时间内频繁开关节能灯会降低它的使用寿命：固定安装或安装在房间的节能灯每次至少应亮15分钟后再关闭。

Repeatedly turning CFLs on and off shortens their lifespan: Install CFLs in fixtures or rooms you keep lit for more than 15 minutes at a time.

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它的工作原理相同的方式，作为开关打开或关闭的发动机声音。

It works the same way as switching engine sound on or off.

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