We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏,
Snakes did not acquire their poison for use against man but for use against prey such as rats and mice, and the effects on these of viperine poison is almost immediate.
因为蛇有毒液不是用来对付人的,而是对付它的猎物,诸如鼠类,毒液对这些猎物会立刻起作用。