这是一个不稳定系统，就像尝试平衡立在指尖上的铅笔一样。
This is an unstable system, like trying to balance a pencil on your fingertip.
我兄弟曾送给教授一个玩具，那是一只立在盛水的碗边保持平衡并反复把头浸入水中的鸟。
My brother once gave the Professor a toy, a bird that balanced on the edge of a bowl of water and repeatedly dunked its head in the water.
新创建康乐委员会于2005年成立，一直为同事举办多元化活动，如足球比赛，瑜伽班等，借以提升集团上下对工作与生活平衡的关注。
NWS Sports and Recreation Committee, which was set up in 2005 to boost work-life balance among staff, has been launching a wide variety of activities such as soccer competition and Yoga Class.
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