quality可数吗

　　例句

　　Everyone can greatly improve the quality of life

　　每个人都可以大大改善生活质量。

　　I assure you of its quality.

　　我向你保证它的品质。

　　Not a high quality sound AT ALL, but I have fun with it.

　　没有一个高品质的.声音在所有，但我已与它的乐趣。

　　Quality over quantity should be your goal.

　　您的目标应该是质量胜过数量。