| 释义 |
as.cer.tain (obj)H.As7E5teIn, $-L5-vfml to discover; to make certain查明; 确定The police have so far been unable to ascertain the cause of the explosion. [T]警方迄今尚未能查明爆炸的原因。I ascertained that no one could overhear us before I told Otto the news. [+ that clause]我确信没有人能听到我们的谈话之后，才把这个消息告诉奥托。Have you ascertained whether she's coming or not? [+ wh- word]你是不是问明白了，她究竟来还是不来?
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