孩子们喜欢安静练习与自由选择。
Gravitational waves are a new way of observing the universe, allowing us to hear the cosmos.
道赋予人形貌,天赋予人形体,不要以好恶伤害自己的身心。
If your process harms the environment, you're not tanning—you're taking.
"Every man is the hero of his own story."
这是最好的时代,这是最坏的时代。