不知所措

not knowing what to do (idiom); at one's wits' end / embarrassed and at a complete loss

no; not so / (bound form) not; un-

not to know / unaware / unknowingly / fig. not to admit (defeat, hardships, tiredness etc)

to know / to be aware

actually / place / classifier for houses, small buildings, institutions etc / that which / particle introducing a relative clause or passive / CL:個|个[ge4]

to handle / to manage / to put in order / to arrange / to administer / to execute / to take action on / to plan