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1·The animal retracted into its shell.

这只动物缩回到自己的壳里。《牛津词典》

2·The undercarriage was fully retracted.

起落架被完全收起。《牛津词典》

3·He made a false confession which he later retracted.

他作了假供词，后来又翻供。《牛津词典》

4·Science retracted both papers.

科学篡改了这两篇论文。

5·The cat retracted his claws.

这只猫缩回它的爪子。

6·Now the flaps were fully retracted.

现在襟翼全部收缩进去了。

7·In the end, four gene signature papers were retracted.

最终，四篇以基因为标签的论文被召回。

8·The pilot found that the undercarriage could not be retracted.

驾驶员发现飞机的起落架不能缩回。

9·Then he retracted them, settled into my embrace and began to purr.

随后它便缩回爪子，适应地依偎在我的怀抱里并发出呜呜的叫声。

10·Such a discovery was first announced, and then retracted, some years ago.

这个发现早在几年前就被发布，但后来被收回。