1. It is perceived unnecessary by our species, as we do not view death as an end, but simply a retraction. 因为我们物种认为这是没有必要的，因为我们并不把死亡看成一个终结，而只是一种撤退。
2. We want the language of that retraction to be rather specific about what was wrong, and that may require some negotiation. 我们希望在撤下论文的声明中能够明确指出哪些是错误的，而这可能还需要协商。
3. Then a retraction less variable precision gap setting method was put forward based on the characteristic of plate gap setting. 基于此特性，提出中厚板电-液联合辊缝设定新方法―无回缩变精度快速辊缝设定法。
英英解释
n.
1. a disavowal or taking back of a previous assertion
2. the act of pulling or holding or drawing a part back
