As currently configured, it has about 9, 900 total square feet, but most is public space packed with historic artifacts.

据最新测算，它总共有9900平方英尺，但是大部分的空间是用来放文物仿制品的。

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Preserve the past: examine, but do not touch, cultural or historic structures and artifacts.

维护过往；不要碰触文化或汗青遗迹。

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In recent years, several countries have been stepping up efforts to return precious historic artifacts to China.

CNN: Ancient bones seized, returned to China

There are the technical realities of ensuring any building has the right conditions for the preservation and display of historic artifacts.

BBC: One option is to preserve part of the old H-blocks

In 1919, at the age of 72, Bell set a marine speed record of 70.86mph on the Bras d'Or Lakes with his HD-4 hydrofoil, a replica of which resides, along with many of his personal artifacts, in the museum of the Alexander Graham Bell National Historic Site of Canada, across the lake from his house.

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