and enabled us to hunt in increasingly sophisticated ways. 令我们能够以越发复杂的方式捕猎
Which enabled it to break apart the water molecule... 这使它能够分解水分子
The food he has brought has enabled her to produce 雄鸟提供充足的食物帮助雌鸟产下
has enabled one animal to spread into cities everywhere, 让一种动物遍布世界各个城市
it is their ability to survive annual change, that has enabled them to cover 它们这种在季节变化生存的本领