assume the office of; hold the post of
take the chair
擔(dān)任會(huì)議主席
ride shotgun
擔(dān)任警戒 （對(duì)運(yùn)送中人、物）
take charge
擔(dān)任領(lǐng)導(dǎo)
act as amiables compositeurs (of arbitrators)
擔(dān)任友好調(diào)解人
be charged with the preparatory work
擔(dān)任籌備工作
serve [act] as referee
擔(dān)任裁判
be the chairman of a trade union
擔(dān)任工會(huì)主席
conduct
擔(dān)任樂隊(duì)指揮
invite them to be advisers on after-school activities
請(qǐng)他們擔(dān)任校外輔導(dǎo)員