he's still got a great number of hazards to face before he grows up. 在它长大之前 还有很多危险要面对
and doubled the number of safe nesting sites. 将能安全筑巢的区域扩大了一倍
This number of living trees would normally fill two hectares of woodland, 这个数量的树木 相当于两公顷的森林
now, less than three percent of that number remains. 现在,只有不足9000头
The news has spread. Now a number of schools are on their way. 消息传开,大量的真海豚上路了
There are also ten times the number of coral species. 而且珊瑚物种也要多十倍
A single hectare of rainforest may contain as many as 250 species of tree. That's nearly ten times the number that grow in Britain 一公顷雨林就可以容纳250种不同的树木 为英国的10倍