The gyrfalcon, an Arctic bird of prey, has survived a close brush with extinction; its numbers are now five times greater than when the use of DDT was sharply restricted in the early 1970's.
其实也不是句子结构,就是我看不懂a close brush with extinction 是什么意思。with extinction是个词组吗?close在这里是什么意思?词典上查不到啊。。
求版上高手解答,thx