| | relapse | n. [舊病復發,再惡化] falling back into a former state, especially becoming worse | 
| relay | n. [分程傳遞,傳播] act of passing something along from one person, group, or station to another | 
| relentless | a. [無情的,殘酷的] unmoved by appeals for sympathy or forgiveness; insensible to distresses of others; unyielding | 
| relevant | a. [有關的,相對的] pertinent; having a connection with the matter at hand | 
| reluctant | a. [不情願的,勉強的] not wanting to take some action; averse | 
| remedy | n. [藥物] a medicine or therapy; cure; fix; repair; provide relief for | 
| remorse | n. [懊悔,自責] the pain of a guilty conscience; feeling of deep regret | 
| renaissance | n. [復興,再生] revival; renewal; the revival of learning and culture | 
| rendezvous | n. [約會,約會地點,會合] meeting at a prearranged time and place; popular gathering place; prearranged meeting point for troops or ships | 
| renowned | a. [著名的] famous; celebrated for great achievements, for distinguished qualities | 
| reptile | n. [爬行動物] cold-blooded vertebrate, including tortoises, turtles, snakes, lizards, alligators, crocodiles | 
| resemblance | n. [相似,酷肖] likeness; similarity in appearance or external or superficial details | 
| resemble | v. [像,類似] be similar to; take after; look like | 
| resign | v. [辭去(職務),聽從,順從] sign back; return by a formal act; yield to another; abandon | 
| resignation | n. [聽從,辭職] act of resigning or giving up, as a claim, possession,  or office; surrender | 
| resolution | n. [堅定,決心,決定] determination; resolving to do something; a formal statement of a decision | 
| resource | n. [資源,財力,辦法,智謀] materials; abilities; available source | 
| restless | a. [不安寧的,好動的] never resting; unquiet; uneasy; continually moving; eager for change; discontented | 
| restrain | v. [克制,抑制] keep under control; hold back; place limits on | 
| retail | a. [零售的] selling of goods to consumers | 
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