大多数作物，威尔科夫博士猜测，有多个授粉品种，因此可能存在着一个授粉者被另一个所取代的余地。
Most crops, Dr Wilcove suspects, are pollinated by multiple species, and so there might be room for one pollinator to be replaced by another.
据科奈尔环境保护科学家杰夫。 威尔斯说，驯鹿也间接支持整个森林的防护，轮流帮助对抗气候变化。
They can also indirectly support the preservation of entire forests, which in turn helps to combat climate change, according to Cornell University conservation scientist Jeff Wells.
NASA电视台将在4月4日凌晨1点开始对斯克沃尔佐夫、考德威尔.戴森和科尔尼杨科与空间站的对接进行直播。
On April 4, coverage of the docking of Skvortsov, Caldwell Dyson and Kornienko will begin on NASA Television at 1 a.m.
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