foreign substance 杂质 ; 混入物 ; 异物 ; 夹杂物
occluded foreign substance 夹杂物
foreign substance detection 异物检测
inspection of foreign substance 异物检查
Eliminate Water Foreign Substance 除去水中杂质
foreign substance of macromolecule 高分子杂质
Specimen obscured foreign substance 标本被异物掩盖
specimen obscured by foreign substance 标本被异物掩盖
Acute reaction to foreign substance accidentally left during a procedure 在操作中对意外遗留异物的急性反应
Despite being light and strong, the metal remains a foreign substance which could wreak havoc in a part of the body vulnerable to all manner of infections, making it unsuitable for actual surgery.
尽管又轻又结实，但是金属始终是异物，可能会对易受各种感染的人体部位造成严重破坏，使它不适合实际手术。
One instance that stuck with us is an anecdote related by Lance Armstrong in which his personal physician, Dr. Michael Ferrari (awesome name), described the effects of sleep as a foreign substance.
他的私人医生迈克尔.法拉利医生（好棒的名字），把睡眠的效果比作奇物。
Injecting yourself into the bloodstream of another culture, another world, as like asking to be treated as a foreign substance to that country's system.
只身投入另一种文化流之中，融入另一个时间，自己被那个国家的系统就像是当做了一种外部物质一样。
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