If that's tough to fathom, consider one of the features already built into the device. Say the wearer goes to the grocery store and picks up a box of cereal from the shelf.

如果这样很难彻底了解，那么请设想一下这套装置已有的一种功能——我们说如果一个使用者到食品店买东西，他从架子上挑了一盒谷类食品。

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Temporary structures are set up to support the formwork when a large concrete bridge with box-section is built.

采用箱型截面的大型混凝土桥梁，其结构施工过程中浇注混凝土需要设置临时支撑结构。

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So I prayed for them and then I put them in an old torn up shoe box and I buried them in the bottom of the fort that I had built in the ground, out by the large bamboos, near the blackberry bushes.

所以我为它们祈祷，然后把它们放进一个破旧的鞋盒里，埋在我在地上建的城堡底部，在大竹林的外面，靠近黑莓丛。

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The company's had a knack for thinking outside the rectangular box and coming up with cleverly built handsets -- the Sensation series and Touch Diamond come to mind -- but it seems to have cranked the focus up another notch this year.

ENGADGET: HTC Droid DNA review Mobile

Discovery's payload bay is taken up with the Italian-built Multi-Purpose Logistics Module (MPLM), which acts as a giant packing box on shuttle logistics missions.

BBC: Faulty valve halts shuttle launch