12.out of the research of够不着的地方

11.improve one's understanding of增进对……的了解

10.be away on holiday外出研究

9.fly through the air 在空中飞行

8.set out to do sth=set about doing sth着手干……

6.mark sth blue把某物标成蓝色记号

　　e to light被发现

5.to the left 向左。on the left在左边

4.work with bees=make a study of bees=do research on bees研究密蜂

2.live in large groups群居

　　unicate with sb与某人交流信息

1.varieties of多种多样的