Prior to the cardiac arrest, 22 percent of people had been sleeping, 9 percent had been bathing, 3 percent had been working, and 0.5 percent had been exercising. The rest had been doing "nonspecific" or unknown activities.
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The rest had been doing "nonspecific" or unknown activities.
其余的在做“非特殊的”或未知活动。
Three samples consisted of standard or quasi-standard substances with known specific activities of some nuclides while the radioactivity of the other sample was unknown.
该比对中的三种样品是由一些具有已知核素比活度的标准物质或准标准物质构成，而另一种是活度未知的盲样。
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