2 sentences

1. 记者向校方求证这一传闻的真实性。

   jì​zhě xiàng xiào​fāng qiú​zhèng zhè yī chuán​wén de zhēn​shí​xìng.

   The reporter sought verification from the school regarding the authenticity of this rumor.

   Source: Dong Chinese Dictionary

2. 数学家正在通过严密的计算来求证这个猜想。

   shù​xué​jiā zhèng​zài tōng​guò yán​mì de jì​suàn lái qiú​zhèng zhè​gè cāi​xiǎng.

   The mathematician is using rigorous calculations to prove this conjecture.

   Source: Dong Chinese Dictionary