Have you ever had difficult sleeping at night?
你曾经在晚上睡觉失眠吗?
African sleeping sickness, an especially difficult and challenging killer, provides a good example.
非洲昏睡病尤其难以控制,是具有挑战性的一个杀手,该病是一个良好的例证。
'Because it's so easy to receive emails constantly, and get notifications from, it becomes more difficult for us to separate our waking and sleeping lives.'
因为持续地接收电子邮件很容易,又能随时听到智能手机的提示音,所以我们要将清醒和睡着时的生活分开变得困难起来。
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