Affluent he may be, but he is by no means sure what, to tip the doorman or the chambermaid.
他們可能很富有，但給看門人和房間女服務員多少小費，心中卻根本沒有數；
新概念英語第四冊
Lesson 47 The great escape
?? 句中詞匯解析
從本句中提取的重要詞匯
adj. 富裕的，富足的;流暢，滔滔不絕的;
n. 富裕的人;支流;
?? af一再+flu流動+ent...的→一再流入→流入的；富裕的
"a very affluent neighbourhood"
富人區
近義：moneyed, monied, opulent, abundant, propertied, prosperous
反義：impecunious, indigent, landless, meager, miserly, needy
n. 方法（ mean的名詞復數）;手段;收入;財富;
v. 意味著（ mean的第三人稱單數）;引起;打算或注定要某人成為或做某事;
"The inquiry is by no means cut and dried."
調查之事遠未蓋棺定論。
近義：approach, manner, method, mode, process, strategy
adj. 確信的，確實的;有把握的;無疑的;一定的;
adv. 當然;確實地;無疑地;
"Make sure the shelf is aligned with the top of the cupboard."
務必使擱架與櫥柜頂端對齊。
近義：inarguable, incontestable, incontrovertible, indefectible, indisputable, indubitable
反義：hesitant, hesitative, imprecise, improbable, inconclusive, indecisive