Most modern safes come equipped with a lead shield.
绝大多数现代保险柜都会有铅层。
Lead shield
原声例句
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SciSHow 快问快答小科普
Thankfully, though, that type of crackling doesn't mean you need to go find a lead shield.
不过值得庆幸的是， 这种噼啪声并不意味着您需要去找铅屏蔽。
英语百科
Lead shielding
（重定向自Lead shield）
Lead shielding refers to the use of lead as a form of radiation protection to shield people or objects from radiation so as to reduce the effective dose. Lead can effectively attenuate certain kinds of radiation because of its high density and high atomic number; principally, it is effective at stopping gamma rays, and x-rays.
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