No one is free, even the birds are chained to the sky.
没有人是自由的，甚至连鸟儿都被天空束缚。
燃气发动机是所有热机中最完美的，因为它结合了蒸汽机和内燃机的优点。
Science is not just about facts; it’s about the stories behind them.
Technology should serve the design, not dictate it.
Every cell in your body carries a story billions of years old.
The universe is not only stranger than we imagine, it is stranger than we can imagine.
We are all hostages of our own memories.