3 sentences

1. 他的检测结果呈阳性。

   tā de jiǎn​cè jié​guǒ chéng yáng​xìng.

   His test results were positive.

   Source: Dong Chinese Dictionary

2. 由于兴奋剂检测呈阳性，这名运动员被禁赛了两年。

   yóu​yú xīng​fèn​jì jiǎn​cè chéng yáng​xìng, zhè míng yùn​dòng​yuán bèi jìn​sài le liǎng nián.

   The athlete was banned for two years after testing positive for performance-enhancing drugs.

   Source: Dong Chinese Dictionary

3. 德语中的名词有阴性、阳性和中性之分。

   Dé​yǔ zhōng de míng​cí yǒu yīn​xìng, yáng​xìng hé zhōng​xìng zhī fēn.

   Nouns in German are categorized into feminine, masculine, and neuter genders.

   Source: Dong Chinese Dictionary