3 sentences

1. 他的核酸检测结果呈阴性。

   tā de hé​suān jiǎn​cè jié​guǒ chéng yīn​xìng.

   His nucleic acid test result was negative.

   Source: Dong Chinese Dictionary

2. 核酸检测的队伍排得很长。

   hé​suān jiǎn​cè de duì​wǔ pái de hěn cháng.

   The line for nucleic acid testing is very long.

   Source: Dong Chinese Dictionary

3. 所有入境旅客都必须接受核酸检测。

   suǒ​yǒu rù​jìng lǚ​kè dōu bì​xū jiē​shòu hé​suān jiǎn​cè.

   All incoming travelers must undergo nucleic acid testing.

   Source: Dong Chinese Dictionary