5 sentences

1. 光年不是时间单位。

   guāng​nián bù​shì shí​jiān dān​wèi.

   A light-year is not a unit of time.

   Source: CCMatrix

2. 当你批量购买，每单位的成本较低。

   dāng nǐ pī​liàng​gòu​mǎi, měi dān​wèi de chéng​běn jiào dī.

   When you buy in bulk, the cost per unit is lower.

   Source: CCMatrix

3. 一个单位的血液可使若干病人受益。

   yī​ge dān​wèi de xuè​yè kě shǐ ruò​gān bìng​rén shòu yì.

   A single unit of blood can benefit several patients.

   Source: CCMatrix

4. 平均来说，你的身体需要一个小时来分解一个单位的酒精。

   píng​jūn lái​shuō, nǐ de shēn​tǐ xū​yào yī​ge xiǎo​shí lái fēn​jiě yī​ge dān​wèi de jiǔ​jīng.

   It takes the body an average of an hour to break down one unit of alcohol.

   Source: CCMatrix

5. 一个天文单位是地球与太阳之间的距离。

   yī​ge tiān​wén​dān​wèi shì dì​qiú yǔ tài​yang zhī​jiān de jù​lí.

   An astronomical unit is the distance between Earth and our sun.

   Source: UM-Corpus: Education