领导力在于做出今天艰难的决定，这些决定将使子孙后代受益。
Leadership is about making tough decisions today that will benefit generations to come.
Sustainability isn't an option; it's a responsibility we owe to future generations.
一个文明的真正考验在于它如何对待最弱小的成员。
The detection of gravitational waves has opened a new window to observe the universe.
The inflationary universe model provides a possible explanation for the origin of the universe.
