impurity

impurity的英语例句

1. This impurity must be purged away after death.

   这种污秽应该在死后加以净化.

2. The oxygen reacts vigorously with the impurity in the iron.

   氧气与铁中的杂质发生剧烈的化学反应.

3. The impurity of supposedly pure subcellular fractions is a constant threat to the plant biochemist.

   以为亚细胞组分很纯而实际不纯的情况,一直是植物化学家感到难办的问题.