铅笔是一个好的工具。你可以用铅笔在文章边缘做注释，就不会对文本造成任何不可复原的毁坏。
A pencil is a good tool. You can use a pencil to make annotations in the margins of your text without doing any permanent damage to the text.
我们不清楚这些基因变化会维持多久，但是先前的数据显示，至少是在吸烟者的基因中，有些变化已经是不可复原的了。
It's not clear how permanent these genetic changes are, but previous data suggests that, at least in smokers, some of the alterations may be irreversible.
人类每个个体所经历的一切种种都是不可复制也不可复原的。作为人生命的一部分，这种本质性的失去增加了人类的悲剧性。
Whatever men have gone through in the past is forever unduplicatable, as a part of men's life, the lost of the past adds the tragic feelins to human being.
她与同事致力于研究对于北冰洋上的海冰是否存在一个不可逆转的“消融点”，一旦达到该点即使气候转凉海冰也无法恢复原来的覆盖量。
She and other scientists are researching whether there might be a 'tipping point' for Arctic sea ice -a point at which sea ice will disappear and never recover, even if the climate cools.
我们不可缺少的水资源确实具有巨大的复原力，但它们越来越脆弱也日趋受到威胁。
Our indispensable water resources have proven themselves to be greatly resilient, but they are increasingly vulnerable and threatened.
莎拉提出想要帮助迈克复原，可将军却表示这是不可能的，劝她最好和迈克保持距离。
Sara says she would like to be of assistance in Michael’s rehabilitation but Padman says that it is impossible and she serves Michael best from a distance.
虽然大部分人的关节伤势最后都会复原，但软骨受损却是不可逆的，只会继续恶化。
Though most people eventually recover from joint injuries, damage to the cartilage can't be reversed and can only get worse.
我告诉每一个人，说我遭遇了一场车祸，我的腿再也不可能完全复原了。
I told everyone I had been in a car crash and that my leg would never completely heal again.
她与同事致力于研究对于北冰洋上的海冰是否存在一个不可逆转的“消融点”，一旦达到该点即使气候转凉海冰也无法恢复原来的覆盖量。
She and other scientists are researching whether there might be a 'tipping point' for Arctic sea ice - a point at which sea ice will disappear and never recover, even if the climate cools.
莎拉提出想要帮助迈克复原，可将军却表示这是不可能的，劝她最好和迈克保持距离。
Sara says she would like to be of assistance in Michael's rehabilitation but Padman says that it is impossible and she serves Michael best from a distance.
但当噪声不可忽略时，L - R算法难以获得较好的复原结果。
However, when the noise can not be neglected, it is difficult for L-R algorithm to get good restoration.
而其他四个球都是玻璃的，掉在地上便会留下疤痕、裂缝，或摔得粉碎，总之不可能再恢复原样。
But the other four balls are made of glass. Once dropped, they will be irrevocably marked, cracked, or even shattered. Just they will never be the same again.
一根线被剪断成一些小段，然后在不可能的情况下复原了！
A thread is broken into smaller pieces, then restored under impossible conditions.
已经不可能恢复原样了，你永远的改变了这些事情。
已经不可能恢复原样了，你永远的改变了这些事情。
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