2 sentences

1. 他下个月要去悉尼出差。

   tā xià gè yuè yào qù Xī​ní chū​chāi.

   He is going to Sydney on a business trip next month.

   Source: Dong Chinese Dictionary

2. 悉尼是澳大利亚最大的城市。

   Xī​ní shì ào​dà​lì​yà zuì dà de chéng​shì.

   Sydney is the largest city in Australia.

   Source: Tatoeba