ascertainKK [ˌæsɚˈten] ｜ /ˌæsɚˈteɪn/
GEPT 中高級
C1verb
find out, learn, or determine something with certainty, usually by making an inquiry or other effort.
The detective worked tirelessly to ascertain the whereabouts of the missing woman.
查明；確認；查清
C1verb
learn or discover something with certainty.
In order to ascertain the truth, the detective meticulously collected evidence and interviewed all the witnesses.
弄清；確定
C1verb
establish something after a calculation, investigation, experiment, survey, or study.
The detective worked diligently to ascertain the identity of the culprit by examining the fingerprints left at the crime scene.
C1verb
make sure something is certain or protected.
Before signing the contract, it is important to ascertain the terms and conditions to avoid any misunderstandings later on.