英语听力：自然百科 鲨鱼湾的海豚—7
时间：2019-01-22 作者：英语课 分类：自然百科2013年
英语课
Puck needs to watch out.As she searches in the sea grass,she will be unaware 1 of any shark approaching.If a tiger shark closes form behind,her sonar can not detect it.Distracted,Puck could be easily attacked.Once detected,Puck can easily out swim the shark.But when her calf 2 arrives,it won't so easy for her to escape.it gets very shallow here,this is the low tide too. Dxxgangs,Mother and a calf.
Look at this little baby,look at that.More than 10000 G living shark bay.it is the largest population in the world,Grazing on the grass beds,they are the most vulnerable to shark attacks,in the shallows they have less room to manoeuvre 3.
The calf swims on top of his mum,that way it is protected from the sharks,which could make a good meal of a Dxxx calfm.
Much swim slower than the dolphins,thousands of D calves 4 are taken by the sharks every summer.We got dolphins and D together here,Hey,Puck.Oh,you are wide.
Looking for clues as to when Puck might give birth,J lowers a special microphone into the water.
a.不知道的，未意识到的
- They were unaware that war was near. 他们不知道战争即将爆发。
- I was unaware of the man's presence. 我没有察觉到那人在场。
n.小牛，犊，幼仔，小牛皮
- The cow slinked its calf.那头母牛早产了一头小牛犊。
- The calf blared for its mother.牛犊哞哞地高声叫喊找妈妈。
n.策略，调动；v.用策略，调动
- Her withdrawal from the contest was a tactical manoeuvre.她退出比赛是一个战术策略。
- The clutter of ships had little room to manoeuvre.船只橫七竖八地挤在一起，几乎没有多少移动的空间。