1·Hoping to understand what's happening in those clouds, epigenetics researchers have focused on biochemical switches that turn genes on and off.
为了了解那些基因云发生的情况，遗传学研究者们必须找到开启和关闭基因的生物学开关。
2·The turning on and off these switches is usually accompanied by a change in shape — “off” the biomolecule lies flat, “on” and it gets folded;
在健康情况下这些转换器的开关总是伴随着一些变化——关上时生物分子平铺开，打开时折叠起来;
3·These switches turn on and off all the time, controlling how our cells work and how we respond to our environments.
受控于我们传感器的工作或者我们对周围环境的反应，这些开关可以随时打开或关闭。
4·In plants, for example, it is one of the things that switches other genes on and off at their promoter sites.
例如，在植物里，其中的一个行为是在基因的启动子区域里开启和关闭其他基因。
5·Genes are not blueprints - they're more like switches that get turned on and off.
基因不是蓝图——它们更像是能够被打开和关上的开关。
6·Instead, for most people, it switches on and off like a light switch.
相反，对于大多数人来说，它就像开关一盏灯一样。
7·Researchers have engineered a benign virus that, when injected into the brain, makes the ion channels—the switches that turn cells on and off—responsive to light.
研究人员在小鼠脑内注入某种良性病毒，这种病毒使细胞膜上和细胞兴奋有关的离子通道对光产生反应。
8·Scientists have even engineered artificial switches to start glowing or giving off some kind of electrochemical or biochemical signal once they are switched "on."
科学家们甚至已经设计了人工开关，当它开启时能够发光和者发出电化学或生物化学信号。
9·The lights go off, and my imagination switches on.
光线退去，想象开场。
10·Examine the control panel, operating instrument and auto components, all the protection switches are on OFF position or STOP position.
检查控制盘内外部各操作和自动元件有无异常，各操作用防护开关是否关闭或者在停止位置。