4 sentences

1. 会议的基调非常务实。

   huì​yì de jī​diào fēi​cháng wù​shí.

   The tone of the meeting was very pragmatic.

   Source: Dong Chinese Dictionary

2. 经理为这次会议定下了基调。

   jīng​lǐ wèi zhè cì huì​yì dìng​xià le jī​diào.

   The manager set the tone for the meeting.

   Source: Dong Chinese Dictionary

3. 这部电影的基调非常灰色，让人感到压抑。

   zhè bù diàn​yǐng de jī​diào fēi​cháng huī​sè, ràng rén gǎn​dào yā​yì.

   The tone of this movie is very bleak, making people feel depressed.

   Source: Dong Chinese Dictionary

4. 这首交响曲的基调是C大调。

   zhè shǒu jiāo​xiǎng​qǔ de jī​diào shìC dà​diào.

   The key of this symphony is C major.

   Source: Dong Chinese Dictionary