An early study in Canada years ago found roughly half of all the women who were childless in their 40s actually chose to be that way from a very early age.
多年前加拿大的一个早期研究发现将近一半40岁没有孩子的妇女，其实是从很早以前就选择这样做了。
An early study suggested that harvests contained levels of radiation well under the safety limit for human consumption.
早期的研究表明，收割的作物所含辐射量远低于供人类安全食用的限制水平。
An early study suggested that harvests contained levels of radiation well under the safety limit for human consumption.
早期的研究表明，收割的作物所含辐射量远低于供人类安全食用的限制水平。
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