• vt. 确定；查明；探知

as-同ad-. certain, 确定。

ascertain (v.)

early 15c., "to inform, to give assurance," from Anglo-French acerteiner, Old French acertener "to assure, certify" (13c.), from a "to" (see ad-) + certain "certain" (see certain). Modern meaning of "find out for sure by experiment or investigation" is first attested 1794. Related: Ascertained; ascertaining.

1. It can be difficult to ascertain the facts.

可能难以查明事实真相。

来自《权威词典》

2. I'm going to ascertain the truth.

我要查明真相.

来自《简明英汉词典》

3. It's difficult to ascertain the coal deposits.

煤储量很难探明.

来自《现代汉英综合大词典》

4. The police determined to ascertain the truth of the matter.

ascertain:警察决心查明事实的真相.

来自互联网

5. Take time to ascertain what services your bank is providing, and at what cost.

花些时间确认一下你的银行会提供什么样的服务，费用是多少。

来自柯林斯例句