The paradox of preventive healthcare: Those who need it most value it least.
舞台上的沉默可以比任何对白更响亮。
记忆是个狡猾的东西;它既可以是安慰,也可以是诅咒。
We will now discuss in a little more detail the Struggle for Existence.  
Integrity is the foundation of every lasting success.