Coal miners are the unsung heroes of America's industrial strength.
The past is not dead. It is not even past.
未来属于那些明白合作比竞争更有力量的人。
MRI的发展彻底改变了医学成像领域,使我们能够以以前无法想象的方式看到人体内部。
Every decision we make today about ocean resources will echo for decades in marine ecosystems.
You can't change the past, but you can create the future.