ascertained是什么意思？

ascertained

英[æsə'teɪnd] 美[æsə'teɪnd]

• v. 弄清，确定，查明( ascertain的过去式和过去分词 )；

例句

• It'should be ascertained if preventive or control procedures have already been attempted. 应查明是否已采取了预防或控制措施.
• I ascertained that she was dead. 我断定她已经死了.
• The previously unidentified objects have now been definitely ascertained as being satellites. 原来所说的不明飞行物现在已证实是卫星.
• The first ascertained appearance of the Aryan family was in connection with the domestic animals. 雅利安族最初呈现的明确形象是与饲养家畜分不开的.
• 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。

柯林斯高阶英汉双解学习词典释义

• VERB
  （尤指经过努力后）查明，弄清，确定
  If you ascertain the truth about something, you find out what it is, especially by making a deliberate effort to do so.
  例句
  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。 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。

英英词典释义

• Adjective
  1. discovered or determined by scientific observation;
  "variation in the ascertained flux depends on a number of factors""the discovered behavior norms""discovered differences in achievement""no explanation for the observed phenomena"