2 sentences

1. 这个复杂的方程有两个实数解。

   zhè​ge fù​zá de fāng​chéng yǒu liǎng gè shí​shù jiě.

   This complex equation has two real solutions.

   Source: Dong Chinese Dictionary

2. 这个函数的定义域是所有实数。

   zhè​ge hán​shù de dìng​yì​yù shì suǒ​yǒu shí​shù.

   The domain of this function is all real numbers.

   Source: Dong Chinese Dictionary