to ensure public security; to ensure safety (for workers engaged in production); public security[cedict]
局长
jú zhǎngㄐㄩˊ ㄓㄤˇ
the chief of a bureau[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]