一个可能是具有攻击性的牙科处理引发炎症是身体治愈反应的部分，和有助改善炎症的化学物损伤你的心脏或血管。
One possibility is that invasive dental procedures trigger inflammation as part of the body's healing response, and that inflammation-promoting chemicals damage your heart or blood vessels.
男孩更具攻击性和不驯服可能反应这样一个事实，在我们的文化中这种行为发生在男孩身上更容易得到宽容与鼓励。
The greater male aggression and noncompliance may reflect the fact that such behaviors are tolerated and even encouraged in males in our culture more than they are in females.
猫鼬快速的反应可以帮助他躲避眼镜蛇的防御性攻击，它有力的下颚能够一下子杀死一条蛇。
The mongoose’s quick reflexes help it dodge the cobra’s defensive bite, and its powerful jaws can dispatch a snake in one blow.
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