There could also be rules about the use of printers at certain times of day; perhaps there are concerns about leaving sensitive materials on certain printers overnight.

还可能存在有关在每天的特定时段使用打印机的规则；或许会考虑连夜在特定的打印机上打印敏感材料。

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It's estimated that dumped computers take ten thousand years to break down, leaving a cocktail of toxic materials including lead and mercury.

这些废弃电脑预计要超过一万年才能分解，留下许多有毒物质，包括铅和汞。

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The wax positive is invested with a mold made of refractory materials and heated to melt the wax, leaving a narrow cavity Between the core and the investment.

正蜡像外面披盖一个耐火材料制成的模具，然后加热使蜡熔化，留下核心与披盖模具之间一个狭窄的空腔。

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After several attempts, the researchers found a level which "inactivates both viruses and bacteria while leaving sensitive materials such as mammalian cells unharmed".

BBC: Cell infected with HIV

But Mr Moynahan uses Russian archive materials to chronicle Rasputin's life in exhausting detail, leaving few of its peculiarities unexplained.

ECONOMIST: Russian history

Since the robocasting machine allows the researchers to manipulate several inks at once, they are able to make new kinds of composite materials this way interlacing the filigrees, and even leaving holes in the material if that helps to arrive at the desired properties.

ECONOMIST: A new way to build complicated materials, micron by micron