The data loggers left behind by the fern collectors showed that during the hottest part of the day, the temperature inside a fern is as much as six degrees Celsius lower than that outside Dr. Elwood suspects.

蕨类物收集的数据记录器显示， 在一天中最热的时候，蕨类物内部的温度比外界低多达6摄氏度。 埃尔伍德疑这一点。

The trees actors put data loggers into some of the ferns they had left in place to measure the temperature within and outside the plants.

研究人员将数据记录器放入一些原位保的蕨类物中，以测量物内外的温度。