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n (1) 醫(yī)生，大夫(person who has been trained to attend sick people or animals) [C](縮寫Dr)：see a～(about a cut) 找醫(yī)生看病(看刀傷);go to the～('s) 去看病;You'd better call the～if you are ill. 你若是病了，最好請醫(yī)生。D～Johnson 約翰遜大夫;an animal/army～獸醫(yī)/軍醫(yī);Good morning，～. 大夫，您早。under the～(for an illness)(BrE)(infml) 在治療中;〖同〗physician， surgeon， dentist;

(2) 博士 ((title of a) person who has gained the highest university degree in any subject)[C](縮寫Dr)：D～of Philosophy/Science/Literature/Letters/Medicine/Law 哲學/理學/文學/文學/醫(yī)學/法學博士;doctor's degree 博士學位;

(3) 修理人(person who repairs things) [C](infml)：a radio/bicycle～收音機/自行車修理人;

v (1) 醫(yī)治(treat by giving or taking medicine) [I， T+n](infml)：He has been～ing there for many years. 他在那里行醫(yī)已有多年。～a cold/a cut with aspirin 用阿斯匹林治感冒/刀傷;～a child (oneself) for a cold/a stomach-ache 給小孩(自己)治感冒/胃疼;〖同〗treat;

(2) 閹割(make(esp an animal)unable to breed)[T+n];

(3) 篡(涂)改(change(sth)for one's own advantage or in order to deceive)[T+n](infml)：～the accounts涂改賬目;～the election results/the evidence/the reports/one's draft-card 竄改選舉結果/證據/報告/征兵證;～a play to suit the public 竄改劇本以迎合大眾口味;〖同〗change， falsify， alter;

(4) 摻(有害物)(add sth harmful to (food or drink)) [T+n](infml)：～sb's drink/sb's fruit juice with vodka在某人的飲料/果汁里摻入伏特加酒;

→′doctoral adj 博士的;′doctorate n 博士學位(頭銜);′doctored adj 閹割的;

【注意】名詞doctor當醫(yī)生或博士講時的縮寫形式Dr 僅用于人名前，如：Dr Davidson(戴維森大夫/博士)。