亚马逊雨林之王森蚺

原文：

The green anaconda is the largest snake in the world, when both weight and length are considered. It can reach a length of 30 feet (9 meters) and weigh up to 550 pounds (227 kilograms). To picture how big that is, if about five ten-year-olds lie down head to foot, they'd be about the length of this huge snake.

The green anaconda is a member of a family of snakes called constrictors. Constrictors are not venomous snakes. They don't kill prey by delivering venom through a bite. Instead, constrictors wrap their bodies around their prey and squeeze until it stops breathing.

知识要点：

1.  green anaconda  绿水蚺，森蚺

2.  lie down head to foot  头I脚相接躺下

3.  It'd take about 11 kids to weigh as much as one anaconda. 

     大约需要11个孩子才能重达一只森蚺。

4. constrictor n. 巨蟒（constrictor中constrict是动词表示压缩、紧缩，-or是表示人或物的后缀）

5.  venomous adj. 有毒的，分泌毒液的；

6.  venom n. 毒液

7. deliver venom 分泌毒液

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