除了可以作为控制策略外，一个切换逻辑性还可以用来描绘数字控制比如状态切换。
Switching logic in addition to adding a control strategy, a switching logic can be added to a schematic for digital control such as switch status.
如果网页中包含着需要经常查看、而且迅速更新的内容，比如查看社交网站上朋友们的状态，或者接收新闻源的最新消息，那么你就必须在不同页面间来回切换。
You have to constantly click back and forth among tabs if they contain fast-changing material you check often, like the status of your friends in social-networking services, or updates to news feeds.
呵欠还起到了使大脑状态过度顺畅的作用，比如从睡眠状态到清醒状态切换时。
Yawning additionally appears to facilitate transitional states of the brain, such as going from sleep to waking periods.
呵欠还起到了使大脑状态过度顺畅的作用，比如从睡眠状态到清醒状态切换时。
Yawning additionally appears to facilitate transitional states of the brain, such as going from sleep to waking periods.
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