杂质 (zá zhì) — impurity; foreign matter (in chemistry, materials, etc.)

Definition

Examples

• 这种水经过过滤后，杂质被去除了。
  Zhè zhǒng shuǐ jīng guò guò lǜ hòu, zá zhì bèi qù chú le.
  After filtration, the impurities are removed from this water.
• 化学实验中，杂质会影响反应结果。
  Huà xué shí yàn zhōng, zá zhì huì yǐng xiǎng fǎn yìng jié guǒ.
  In chemical experiments, impurities can affect the reaction results.
• 食品中不能含有有害杂质。
  Shí pǐn zhōng bù néng hán yǒu yǒu hài zá zhì.
  Food must not contain harmful impurities.