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TOEFL IELTS BNC: 5989 COCA: 9571

ascertain

Word family
as·cer·tain /ˌæsəˈteɪn $ ˌæsər-/ ●○○ verb [intransitiveI, transitiveT]  
formalFIND OUT to find out something 弄清,确定,查明 SYN establish
 A postmortem was ordered to try to ascertain the cause of death.
下令验尸以查明死因。
ascertain whether/what/how etc
 Tests were conducted to ascertain whether pollution levels have dropped.
进行了检测以确定污染程度是否已经下降。
ascertain that
 Police had ascertained that the dead man knew his killer.
警方确定死者认识凶手。
ascertain something from somebody/something
 You should ascertain the level of insurance cover from the car rental company.
你应该向汽车租赁公司打听清楚保险的范围。
ascertainable adjectiveadj
Register
Ascertain is used mainly in formal or technical contexts. In everyday English, people usually say find out: ascertain主要用于正式或科技语境中。 在日常英语中,人们一般说find out
We need to find out exactly what happened before we jump to any conclusions.
我们要弄清到底发生了什么事,不要贸然下结论。
Examples from the Corpus
Origin ascertain
(1500-1600) Old French acertainer, from certain
as·cer·tain verb →REGISTER1
Chinese
Syllable
Corpus

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