“完成返回加拿大的整段旅程，帝王蝶可能会经历四到五代。”薛西斯戈灰蝶协会濒危物种项目的负责人萨琳娜·杰普森说道。

"It might take the monarchs as many as four to five generations to complete the journey all the way back up to Canada," says Sarina Jepsen, who directs the endangered species program for the Xerces Society.

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研究人员，弗朗西斯科代罗教授说：'这项研究中所用的设备基本上与在全球诊所和医院使用的相同。

Researcher Professor Francesca Cordeiro said: 'The equipment used for this research is essentially the same as is used in clinics and hospitals worldwide.

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多萝西的孩子们带着第三代从美国回来探亲。

Dorothy's children came from America to visit with the grandchildren.

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