Progress in this area can be measured by the difference in weight between buildings built now and those of comparable size built one hundred years ago.

通过现在修建的建筑物和在一百年前修建的具有相同规模的建筑物在重量上的差异，我们可以衡量出这一领域的进步。

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The earliest recorded weight-driven mechanical clock was built in 1283 in Bedfordshire in England.

有记载的最早的重量驱动机械钟是1283年在英国贝德福德郡建造的。

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Marks in the wall indicate wooden roof supports were used to create the tomb, but the wood long ago collapsed under the weight of the pyramid built above.

墙上的痕迹表明木屋顶被用来支承建坟墓，木材早已被金字塔重量作用下倒塌。

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The army also wants to buy medium-weight armoured vehicles to replace existing equipment, some of it built in the 1960s.

ECONOMIST: Defence procurement

The pound-and-a-half weight of a current iPad sheds the tremendous amount of weight that would normally be needed for a conventional in-flight entertainment system built into the headrest, which on a typical 375-seat 767 could see the iPads pay for themselves within years, if not sooner.

ENGADGET: Qantas to hand out free iPads to all passengers on Boeing 767s, save fuel and our sanity (video)