2 sentences

1. 他拍了数万张照片。

   tā pāi le shù​wàn zhāng zhào​piàn.

   He took tens of thousands of photos.

   Source: CCMatrix

2. 人体含有数万亿个细菌细胞，其中许多是有益的。

   rén​tǐ hán​yǒu shù​wàn yì ge xì​jūn xì​bāo, qí​zhōng xǔ​duō shì yǒu yì de.

   The human body contains trillions of bacterial cells, many of which are beneficial.

   Source: CCMatrix