最主要的影響是快速增長的人口問題。
rational['r??n?l]a。 理性的,理智的;合理的
例句 Rational appeals in advertising aimed at children should certainly be limited until the children are ready in emotional and psychological aspects。 廣告中針對孩子的理性訴求應該受到限制,直到他們在情感和心理方面成熟為止。
ravage['r?vi?]n。/v。 嚴重損壞;(尤指軍隊等)搶劫,掠奪
例句 As the ravages of the thirty years' war; textile production had to move into the countryside for further development。 由於30年戰爭的嚴重破壞,紡織業不得不為了長遠發展而搬到農村。
readiness['redin?s]n。 敏捷,迅速;準備就緒
例句 By this means; the soldiers signal their readiness。 透過這種方式,士兵們互相示意他們已經準備就緒。
realm[relm]n。 國度;界,領域
例句 Several types of control united the Roman realm; just as cement held Roman walls together。 幾種型別的管理制度使羅馬帝國團結在一起,就像水泥構建了堅固的羅馬城牆一樣。
reasonable['ri:zn?bl]a。 合理的;有道理的;通情達理的
搭配 a reasonable excuse 合理的藉口
例句 Although it seems reasonable to believe that colonization expeditions would be good for the local people; it is against much of the evidence。 儘管“殖民擴張對當地人民是有好處的”這一觀點看似合理,但它有悖於大量的事實證據。
要點 雖然reasonable的詞義很多,但是在閱讀中最常見的含義是“合理的”,很少會用fair替代。也常常以副詞reasonably的形式出現。
rebellion[ri'belj?n]n。 叛亂,反叛
例句 The military had to remain to suppress rebellion and organize government actively。 軍隊必須在繼續鎮壓叛黨的同時,積極組織政府。
rebound['ri:baund]n。 彈(跳)回;振作;(情緒)波動
例句 The causes of this population rebound are consequences of war and other human actions。 人口反彈是戰爭和其他人類活動的後果。
reclaim[ri'kleim]v。 收回;開墾(土地)
例句 Reclaimed land was suitable for lo