NO. Direction Words 1 up increase, surge, leap, rise, grow, went up, soar, double, multiply, climb, exceed 2 down decrease, drop, fall, dive, decline, plummet(垂直落下), halve(二等分,把XX减半), depreciate(贬值/跌价), plunge(跳进) 3 up & down to vary / fluctuate, undulated(波形的,波状的), dip(浸,蘸,使XX微降/下沉) 4 same stable(stabilized), leveled off, remained constant / steady, consistent 5 changes (adj) sharp, sudden, rapid, abrupt, […]