refresh［ri'fre？］v。 使清新；（使）精神振作；（使）恢復活力
例句 It was such a hot night that I had a cold shower to refresh myself。 那天晚上很熱，我不得不衝個冷水澡來提提神。
reluctant［ri'l？kt？nt］a。 不情願的，勉強的
例句 Artists who were most dependent on photography were reluctant to admit that they had used it； because their professional standing would be affected。 主要依賴攝影技術的藝術家們不願承認他們使用過這種技術，因為他們的專業地位可能會受到影響。
repudiate［ri'pju：dieit］v。 與（某人）斷絕來往；脫離關係
例句 The worker was bound to the employer by a mutual contract that either one could repudiate； and the relationship was conceptualized as one of partnership。 員工因一份共同的合同而受到老闆的束縛，這份合同的任何一方都可以拒絕履行，因此他們之間的關係也被概念化為一種合作關係。
reservoir［'rez？rvwɑ：r］n。 水庫，蓄水池；彙集
例句 Some scholars agree that the construction of small dams and reservoirs indicates the farmers are intensifying their efforts。 一些學者同意，小型水壩和水庫的建設證明了這些農民付出了更多的努力。
residence［'rezid？ns］n。 住處；居住，（合法）居住資格
例句 1。 The residence time of water in a lake is the average length of time that any detailed molecule of water remains in the lake。 By dividing the volume of water in the lake； the rate that water leaves the lake can be calculated。 水在湖裡的停留時間是指湖中每一個精確的水分子在湖裡停留的平均時長，透過劃分湖中的水量，能夠計算出湖水離開湖的速率。
2。 Archaeologists find that the most isolated residences also obtained some pottery and probably food from some distance away during the eleventh and twelfth centuries。 考古學家發現在11和12世紀期間，最與世隔絕的住房中也有一些來自較遠地區的陶器和食物。
restless［'restl？s］a。 不安的，焦躁的；不停的
例句 He found that caged birds became restless when they would normally have begun migration in the wild。 他發現那些本該在野外開始遷徙的鳥在被困於籠中時會變得焦躁不安。
restricted［ri'striktid］a。 限制的；受約束的
例句 1。 The produce was transported to cities where the consumption of fruit and vegetables was no longer restricted to the wealthy。 農產品被運送到