当务之急

top priority job / matter of vital importance

(onom.) dong / ding dong (bell)

to be / to act as / manage / withstand / when / during / ought / should / match equally / equal / same / obstruct / just at (a time or place) / on the spot / right / just at

at or in the very same... / suitable / adequate / fitting / proper / to replace / to regard as / to think / to pawn / (coll.) to fail (a student)

(possessive particle, literary equivalent of 的[de5]) / him / her / it

urgent / pressing / rapid / hurried / worried / to make (sb) anxious

affair / business / matter / to be engaged in / to attend to / by all means