Life has its ups and downs, but it certainly has its rewards.
人生有沉也有浮,但是无论怎样都确有其价值。
The unrighteous penny corrupts the righteous pound.
不正当得来的便士会使正当得来的英镑受到污浊。
If you want to send a letter to an office abroad that is in a different time zone, you can send a fax, and it will be received even though the office is not open.