HSK 5
某
mǒu代
some; a certain; sb or sth indefinite; such-and-such
某位客户留下了这张名片。
Mǒu wèi kè hù liú xia le zhè zhāng míng piàn.
A certain client left this business card.
Say it
Hold the button, say it, then let go.
Also free:
New in the HSK 3.0 word list at level 5.