ascertained

英 [ˌæsəˈteɪnd]

美 [ˌæsərˈteɪnd]

v.  查明; 弄清
ascertain的过去分词和过去式

过去分词：ascertained　过去式：ascertained　

柯林斯词典

• VERB （尤指经过努力后）查明，弄清，确定
  If youascertainthe truth about something, you find out what it is, especially by making a deliberate effort to do so.
  1. Through doing this, the teacher will be able to ascertain the extent to which the child understands what he is reading...
     这样一来，老师就能确定孩子们对他所读的内容理解多少了。
  2. Once they had ascertained that he was not a spy, they agreed to release him...
     一旦确认他并非间谍，他们即同意将他释放。
  3. 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。

英英释义

adj

• discovered or determined by scientific observation
  1. variation in the ascertained flux depends on a number of factors
  2. the discovered behavior norms
  3. discovered differences in achievement
  4. no explanation for the observed phenomena
  Synonym:discoveredobserved

双语例句

• The pathway of DDT degradation in soil has not been fully ascertained.
  在土壤中滴滴涕降解的途径还没有充分调查。
• CHD events were ascertained by linkage to national registers.
  通过与国家登记部门联系确认冠心病事件。
• The actual site was eventually ascertained.
  实际的出土遗址也最终确定了。
• It appears that some little trouble was caused by a woman, whose name has not been ascertained.
  看来这件小小的麻烦是由一个至今尚不清楚其姓名的女人所引起的。
• Once they had ascertained that he was not a spy, they agreed to release him
  一旦确认他并非间谍，他们即同意将他释放。
• The occurrence rules of rice planthopper in rice field with cultural crab was ascertained through systemic investigation and field census.
  通过系统调查和大田普查相结合的方法，研究明确了养蟹稻田稻飞虱的发生规律。
• A white rot fungus biomembrane reactor system was set up, and the optimal operation parameters of the reactor system were ascertained.
  建立了白腐真菌生物膜反应器，并对其运行参数进行了调试优化。
• Have you ascertained whether she's coming or not?
  你是不是问明白了，她究竟来还是不来？
• Based on the analysis of pavement noise's mechanism, character of pavement noise was ascertained.
  在分析路面噪声产生机理的基础上，确定路面噪声的特性。
• After a series of experiments important phenomena have been ascertained.
  在一系列的实验之后，许多重要现象确实知道了。