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小测验：选择正确的单词
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ascertain [æsə'tein]
基本释义
- vt. 确定,探知
查明
词形变化
- 时 态：as·cer·tained, as·cer·tain·ing, as·cer·tains名 词：as'cer·tain'ment形容词：as'cer·tain'a·ble副 词：as'cer·tain'a·bly
参考例句
- A photoelectric instrument for ascertaining cloud heights.
云高计测算云高的一种光电设备 - I ascertained the disease to be diphtheria.
我确定该病为白喉。
- A photoelectric instrument for ascertaining cloud heights.
英英解释
4个动词解释
- establish after a calculation, investigation, experiment, survey, or study
[同] determine, find, find out, ascertain
[例]- find the product of two numbers
- The physicist who found the elusive particle won the Nobel Prize
- be careful or certain to do something; make certain of something
[同] control, ensure, insure, ascertain, assure, see, see to it, check
[例]- He verified that the valves were closed
- See that the curtains are closed
- control the quality of the product
show all ... (
4
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- establish after a calculation, investigation, experiment, survey, or study