jīng / guò / chǔ / lǐ / hòu / yàng / pǐn / zhōng / de / shèng / yú / fàng / shè / xìng / yǐ / jīng / jiàng / dào / ān / quán / fàn / wéi / nèi

经过处理后，样品中的剩余放射性已经降到安全范围内。

After treatment, the residual radioactivity in the sample had fallen within the safe range.