性质；本质character; nature

• 质的差异

  qualitative difference

• 质的飞跃

  qualitative leap

• 量转化为质

  quantity transformed into quality

• 量的变化能引起质的变化。

  A quantitative change can lead to a qualitative change.

• 不同质的矛盾，只有用不同质的方法才能解决。

  Different kinds of conflict can only be solved in different kinds of ways.

参见：质量

• 优质

  quality

• 保质保量

  guarantee both quality and quantity

物质matter

• 铁质的器具

  ironware

• 流质的食物

  fluids

抵押品pledge

• 以手表为质

  with one's watch as a pledge

参见：质问[zhìwèn]

抵押to pawn

• 以衣物质钱

  pawn one's clothing for money

参见：质朴[zhìpǔ]