theorem of Bernoulli

例句：

1. 1. The theorem states that the sum of all primes is a certain number.
   该定理表明所有质数之和是一个特定的数字。
2. 2. The mathematician proved the theorem using complex numbers.
   数学家使用复数证明了这个定理。
3. 3.The theorem has been proven to be true in many cases.
   在许多情况下，这个定理已被证明是正确的。