保持谦逊,保持渴望
To signal an emergency, use the rule of three; 3 shouts, 3 horn blasts, or 3 whistles.
Gravitational waves are a new way of observing the universe, allowing us to hear the cosmos.
The greatest of evils and the worst of crimes is poverty.
骄傲是普遍的罪恶,是最大的恶习。