in the process of (doing something or happening); while (doing)[cedict]
打
dáㄉㄚˊ
dǎㄉㄚˇ
dozen[cedict]
to beat; to strike; to hit; to break; to type; to mix up; to build; to fight; to fetch; to make; to tie up; to issue; to shoot; to calculate; since; from[cedict]
您
nínㄋㄧㄣˊ
you (formal)[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]