The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.
I'm the reason your moon won't glow.
A building should appear to grow easily from its site.
劳动的自然价格是使劳动者能够生存并延续其后代所必需的价格,既不增加也不减少。
我不是圣人,我是罪人。
The only way to do great work is to love what you do.
一本好书是一扇通往更广阔世界的魔法之门,那里充满奇迹、美丽和真理。