wèi / bì / miǎn / cán / yú / zhān / rǎn / yàng / pǐn / chǔ / lǐ / wán / hòu / bì / xū / gēng / huàn / shǒu / tào

为避免残余沾染，样品处理完后必须更换手套。

To prevent residual contamination, gloves must be changed after handling the samples.