①学校观鸟俱乐部的成员们正在研究不同种类的鸟 ______ the birdwatching club ____________________②一些鸟在寒冬来临之前飞往南方作短暂的停留some birds __________________________ before winter comes
问题描述：
①学校观鸟俱乐部的成员们正在研究不同种类的鸟 ______ the birdwatching club ____________________
②一些鸟在寒冬来临之前飞往南方作短暂的停留
some birds __________________________ before winter comes
答
The members of are studying different kinds of birds.
fly to the south for temporary stay