You'll notice that the code sample is set up to be useful as a test bed for different UI widgets and layouts ideas.
您会注意到，代码示例被设置为适合用作不同用户界面小控件和布局想法的测试温床。
Set up a tent in the camping department; tell others you'll only invite them in if they bring pillows from Bed and Bath.
在露营用品部，搭一个帐篷；告诉其他人，除非他们床上用品部拿来枕头，否则不会邀请他们一起露营。
Even if a mosquito somehow managed to penetrate such a barrier, a second light curtain set up around a bed, for example, would provide further protection.
即使蚊子能穿过一道此类屏障，第二道光幕，比如说设立在床周围，会提供进一步的保护。
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