您要查找的是不是：
- He could not discover why. 他想不出所以然。
- Wondering how she could be so clever as to think of a place of concealment that he could not discover, he thought of a ruse whereby he could make her reveal it. 让他奇怪的是老妇人能够想出一个让他找不到的地方。于是他想出一个办法。
- He could not turn his back upon helpless travelers. 对孤立无援的旅客，他不忍心拒绝不管。
- The poor old minister looked and looked, he could not discover anything on the looms, for a very good reason, viz: there was nothing there. 这位可怜的老大臣的眼睛越睁越大，可是他还是看不见什么东西，因为的确没有什么东西可看。"
- He could not have said why he was gloomy. 他自己也说不上为什么会这样没精打采。
- He could not adequately express his sentiment. 他无法恰当地表达出他的感情。
- He could not resist the temptation to steal. 他经不起想要偏巧的诱惑。
- He could not explain why it was so. 他说不出个所以然来。
- He could not realize his own danger. 他未能意识到自己的危险。
- He could not possibly have endured a whipping. 他不可能受得住一顿鞭打。
- He could not stand the terrible English climate. 他忍受不了糟糕的英国气候。
- He could not come up with a proper answer. 他想不出一个合适的回答。
- He could not account for his foolish mistake. 他无法解释他所犯的荒谬的错误。
- He could not account for his absence from school. 他无法说明他旷课的原因。
- He could not avoid having to atone for what he had done. 他干了坏事，免不了要自食其果。
- He could not fully understand these involved scholarly lectures. 这些艰深的学术讲演他不能完全听懂。
- The old man tried to spit up sputum, but he could not. 这老人想把痰咯出来但他不能。
- He was seized with a restlessness he could not account for. 他突然感到一阵莫明其妙的不安情绪。
- He could not tolerate the extremes of heat in the desert. 他忍受不住沙漠的酷热。
- The king said he could not make new laws if he was so hedged in by old ones. 国王说如果他如此受旧法律的眼制，他就不能制定新法律。
