yì wù
duty
obligation
commitment
volunteer duty
CL:項|项[xiang4]
mandatory
voluntary
jìn yì wù
to fulfil one's duty
to work without asking for reward
gōng mín yì wù
civil obligation
a citizen's duty
yì wù gōng zuò zhě
volunteer
voluntary worker
Quán mín Yì wù Zhí shù Rì
National Tree Planting Day (March 12th), as known as Arbor Day 植樹節|植树节 [Zhí shù Jié]
Quán mín Yì wù Zhí shù rì
National Tree Planting Day (March 12th), as known as Arbor Day 植樹節|植树节[Zhi2 shu4 jie2]
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