4 sentences

1. 我的杂志，探讨严肃议题。

   wǒ de zá​zhì, tàn​tǎo yán​sù yì​tí.

   My magazine deals with serious issues.

   Source: OpenSubtitles

2. 会议已转入下一个议题。

   huì​yì yǐ zhuǎn​rù xià yī gè yì​tí.

   The meeting has moved on to the next item on the agenda.

   Source: Dong Chinese Dictionary

3. 与会代表正在讨论重要的议题。

   yù​huì dài​biǎo zhèng​zài tǎo​lùn zhòng​yào de yì​tí.

   The delegates at the meeting are discussing important issues.

   Source: Dong Chinese Dictionary

4. 双方就共同关心的议题交换了意见。

   shuāng​fāng jiù gòng​tóng guān​xīn de yì​tí jiāo​huàn le yì​jiàn.

   Both sides exchanged views on topics of mutual concern.

   Source: Dong Chinese Dictionary