| 31. | We are in complete ignorance of his plans. |
| 我们完全不知道他的计划。
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| 32. | A deplorable ignorance on this subject has resulted in a serious consequence. |
| 对这一问题可叹的无知导致了严重的后果。
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| 33. | These erroneous ideas are due to an excusable ignorance . |
| 这些错误的想法起因于可原谅的无知。
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| 34. | Such ignorance is truly laughable. |
| 这种无知确实很可笑。
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| 35. | Such an attitude comes from sheer ignorance . |
| 这种态度源自十足的无知。
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| 36. | To spell incorrectly is a mark of vulgar ignorance . |
| 拼写不正确是粗俗无知的表现。
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| 37. | If he did wrong, it was from [through ] ignorance . |
| 假若他做错了，那是由于无知。
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| 38. | In medieval times it was the policy of the church to keep the people in ignorance . |
| 中世纪教会的策略就是使人们愚昧无知。
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| 39. | No plea can be set up on the ground of ignorance . |
| 以无知为理由而提出的抗辩是不能成立的。
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| 40. | absolute ignorance , silence |
| 全然无知, 寂然无声
|