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勤める， 務める， つとめる
1. to work (for), to be employed (at), to serve (in)
2. to serve (as), to act (as), to fill (the position of), to play the role (of)
3. to conduct a religious service
为……工作；在……任职；在……服务；担任(某职务)，充当(某角色)，填补(该职位)，扮演(该角色)；举行宗教仪式
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题；表示与另一选项（无论是否明确提及）形成对比；表示强调
に
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), for, with
5. by, from
6. as (i.e. in the role of)
7. per, in, for, a (e.g. "once a month")
8. and, in addition to
9. if, although
tbd
