1·Its infra-red sensors enable it to slow down before nudging up to an obstacle—such as a dozy cat—changing direction and setting off again.
它内置的红外线感应器能使它在撞到物体——比如，一只慵懒困倦的猫——之前停下来，然后换个方向，继续前进。
2·You just defeat the purpose of studying in the first place if you try to take a test in a dozy 8 haze 9.
如果你在一种困倦的状态下来完成考试，起初熬夜学习的目标便会破灭。