Unit 3 Computer（Vocabulary and Useful Expressions）教案
brain
n. 1. part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord 2. mental ability: he’s got plenty of brains but no common sense.
spoil
n. 1. the act of stripping and taking by force 2. the act of spoiling something by causing damage to it: her spoiling my dress was deliberate.3. (usually plural) valuables taken by violence (especially in war): to the victor belong the spoils of the enemy. v. 1. become unfit for consumption or use: the meat must be eaten before it spoils. 2. have a strong desire or urge to do something: he is spoiling for a fight.
mop
n. cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors v. 1. make a sad face and thrust out one’s lower lip: mop and mow.) 2. to wash or wipe with or as if with a mop: mop the hallway now.
wander
v. 1. go via an indirect route or at no set pace: after dinner, we wandered into town. 2. move about aimlessly or without any destination, often in search of food or employment: the wandering jew. 3. lose clarity or turn aside especially from the main subject of attention or course of argument in writing, thinking, or speaking: her mind wanders. 4. be sexually unfaithful to one’s partner in marriage: might her husband be wandering? 5. to move or cause to move in a sinuous, spiral, or circular course: sometimes, the gout wanders through the entire body.