ramification N. /分支;分叉/branching out; subdivision. We must examine all the ramifications of this problem.
ramify V. /分支;分开/divide into branches or subdivisions. When the plant begins to ramify, it is advisable to nip off most of the new branches.
ramp N. /斜面;斜坡/slope; inclined plane. The house was built with ramps instead of stairs in order to enable the man in the wheelchair to move easily from room to room and floor to floor.
rampant ADJ. /猖獗的;滋生的;猛烈的/growing in profusion; unrestrained. The rampant weeds in the garden choked the flowers until they died.
ramshackle ADJ. /摇摆的;摇摇欲坠的/rickety; falling apart. The boys propped up the ramshackle clubhouse with a couple of boards.
rancid ADJ. /油脂一样腐臭的/having the odor of stale fat. A rancid odor filled the ship's galley and nauseated the crew.
rancor N. /苦难/bitterness; hatred. Thirty years after the war, she could not let go of the past but was still consumed with rancor against the foe.
random ADJ. /随机的/without definite purpose, plan, or aim; haphazard. Although the sponsor of the raffle claimed all winners were chosen at random, people had their suspicions when the grand prize went to the sponsor's brother-in-law.
rankle V. /激怒;溃烂;化脓/irritate; fester. The memory of having been jilted rankled him for years.
rant V. /咆哮;激昂的演说;斥责/rave; talk excitedly; scold; make a grandiloquent speech. When he heard that I'd totaled the family car, Dad began to rant at me like a complete madman.
rapacious ADJ. /极度贪婪的;捕食的;掠夺的/excessively greedy; predatory. The rapacious brigands stripped the villagers of all their possessions. rapacity, N.
rapport N. /情感的亲近;和谐/emotional closeness; harmony. In team teaching, it is important that all teachers in the group have good rapport with one another.
rapt ADJ. /迷住的;全神贯注的/absorbed; enchanted. Caught up in the wonder of the storyteller's tale, the rapt listeners sat motionless, hanging on his every word.
rarefied ADJ. /稀释(气体)/made less dense (of a gas]. The mountain climbers had difficulty breathing in the rarefied atmosphere. rarefy,V.
raspy ADJ. /刺耳的;焦躁的/grating; harsh. The sergeant's raspy voice grated on the recruits' ears.