Human activities have become a significant force shaping Earth's climate.
"The truth is rarely pure and never simple."
要理解一个生命，必须先理解它所处的时代。
Every day is a new beginning.
Success is not about making money; it's about making a difference.
时间并非实物，因此我们既无法浪费也无法节省；它始终与我们同在。