A mother's love never changes.

　　母爱永恒。

　　An apple a day keeps the doctor away.

　　一天一苹果，不用请医生。

　　A new broom sweeps clean.

　　新官上任三把火。

　　An eye for an eye and a tooth for a tooth.

　　以眼还眼，以牙还牙。

　　An hour in the morning is worth two in the evening.

　　一日之计在于晨。

　　An old dog cannot learn new tricks.

　　老狗学不出新把戏。

　　An ounce of luck is better than a pound of wisdom.

　　聪明才智，不如运气。

　　An ounce of prevention is worth a pound of cure.

　　预防为主，治疗为辅。