5 sentences

1. 有些人总是抱怨运气不佳。

   yǒu​xiē​rén zǒng​shì bào​yuàn yùn​qi bù​jiā.

   Some people are always complaining about their bad luck.

   Source: CCMatrix

2. 他的视力不佳。

   tā de shì​lì bù​jiā.

   He has poor eyesight.

   Source: Tatoeba

3. 她的父亲因健康不佳而无法工作。

   tā de fù​qīn yīn jiàn​kāng bù​jiā ér wú​fǎ gōng​zuò.

   Her father is unable to work due to ill health.

   Source: CCMatrix

4. 如果非常频繁地变换任务，他们的表现就不佳。

   rú​guǒ fēi​cháng pín​fán de biàn​huàn rèn​wu, tā​men de biǎo​xiàn jiù bù​jiā.

   If they change tasks very often, they do not perform well.

   Source: CCMatrix

5. 他可能心情不佳。

   tā kě​néng xīn​qíng​bù​jiā.

   He may be in a bad mood.

   Source: CCMatrix