4 sentences

1. 宇航员每月可以减掉1％的骨密度。

   yǔ​háng​yuán měi​yuè kě​yǐ jiǎn diào1％ de gǔ mì​dù.

   Astronauts can lose 1 percent of their bone density a month.

   Source: CCMatrix

2. 你需要知道更多关于密度的知识而不仅仅是公式。

   nǐ xū​yào zhī​dao gèng​duō guān​yú mì​dù de zhī​shi ér bù​jǐn​jǐn shì gōng​shì.

   You need to know more about density than just the formula.

   Source: CCMatrix

3. 这是一个多山的岛屿，人口密度高。

   zhè shì yī​ge duō​shān de dǎo​yǔ, rén​kǒu​mì​dù gāo.

   It is a mountainous island with a high population density.

   Source: CCMatrix

4. 古罗马至少比现在的纽约市人口密度高出六倍。

   gǔ​luó​mǎ zhì​shǎo bǐ xiàn​zài de niǔ​yuē​shì rén​kǒu​mì​dù gāo chū liù bèi.

   Ancient Rome was at least six times more densely populated than present-day New York City.

   Source: CCMatrix