They help the menu or window stand out from the background by reinforcing its dimensions. They also block out the noise of the content beneath the window by darkening the area around it with a shadow.

这些阴影通过增加菜单或者窗口的维度来使它们变得醒目，同时也能来把这块区域变暗以阻止下方内容的干扰。

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Window frames while making loud, hollow out the window can not see a trace of shadow and surrounded by silence, only the hour hand is still leisurely night to beat the wall.

窗棂一阵拍响，空洞的窗外看不见一丝影子，周围又一片沉寂，只有时针还在不紧不慢地拍打着夜的墙。

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Shadows can be especially scary, but before running for cover, make sure the shadow hasn't been cause by a passing car or a streetlight casting shadows of trees through the window.

阴影通常都很吓人。看到阴影，先不要急着跑去拿被子蒙头，检查一下这阴影是不是路上开过去的车子造成的，或者是路灯把树的影子折射到了窗子上。

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