如何完美表達書信中的「謝謝」

Thank you for one of the most memorable days of my trip.

% ~- Q& f6 l4 x/ ?+ F為了旅途中最值得留念的一天，謹向您表示感謝。
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' d8 C/ }: \+ W: s* QThank you for one of the most enjoyable visits we have had in many months.

" w" p' ^  R& a- B6 W( Q# R( G在您處的參觀訪問，是我們幾個月中最愉快的一次。謹向您表示感謝。
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- M/ w; N, }9 tThank you for one of the most memorable days of my trip.

為了旅途中最值得留念的一天，謹向您表示感謝。

  X9 y  T5 \1 Q, n7 m) {8 ]) K+ iThank you for doing so much to make my trip to New York interesting (pleasant)(resultful).

; P5 e/ S) ]0 i3 U7 Y" `1 r為了使我去紐約的旅遊有趣（愉快）（大有收穫），您做了許多事，特此致謝。
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: z, u% W; }+ P: }Thank you for contributing so much to the pleasure of our stay in ...
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感謝您為使我們在......的停留期間的愉快所作的許多努力。
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0 B8 _9 {8 f0 x" F3 OThank you so much for your generous hospitality.

7 t' i$ `% T; d$ g% l& F9 K2 |% \6 i非常感謝您慷慨的款待。

- h) Y( d0 \5 X+ Q5 n% s; c- zI hope something will bring you to New York soon so that I can reciprocate your kindness.
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希望不久您能有機會到紐約來，使我能答謝您的盛情。
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You must give me the chance to return your kindness when you visit here.

$ n/ p7 t0 m/ ^5 ?6 i& P3 ]希望您光臨我處，使我能答謝您的盛情。

/ N5 R# A2 |' EThank you very much (ever so much) (most sincerely) (indeed) (from the bottom of my heart).

很（非常）（最真誠地）（確實）（衷心）感謝您。
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Many thanks for your kind and warm letter.

感謝您友好而熱情的來信。
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: k! x. b) x" h9 ^- ~  [8 f: a/ [Thanks a million (ever so much).

# w* s2 Z+ D7 Q* ~( O8 V萬分（非常）感謝。

Please accept ( I wish to express )my sincere (grateful) (profound) appreciation for ...
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% U. r9 f  e! T8 a請接受（致以）真摯的（衷心的）（深切的）感謝......
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I sincerely (deeply) (warmly) appreciate ...
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! B/ u3 B3 k' {. C9 m% d我真摯的（深深的）（熱情的）感謝......

I am very sincerely (most) (truly) grateful to you for ...
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; U0 ?/ i3 H& ~- W5 ]; Z# _為了......，我非常真摯的（深深的）（真誠的）感謝您。 (待續)
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There is nothing more important (satisfying) (gratifying) to me than to receive one of your letters.

再也沒有比收到您的來信更使我覺得重要（快慰）（感激）了。
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Your letters are so much fun (comfort) (entertainment) (company).

您的來信充滿了樂趣（給了很大安慰）（帶來了歡樂）（使我不感寂寞）。
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2 ]- Y7 f# G: k2 TYour most courteous (considerate)(delightful)letter...

/ q  j. s( `1 M6 R* @! i8 F您那彬彬有禮（體貼入微）（令人欣慰）的來信……

I cannot tell you how much your letter delighted(relieved)(amused)(enchanted)me.

我無法告訴您，您的來信使我多麼高興（寬慰）（覺得有趣）（陶醉）。

- r* {8 B5 ^, p" X; j' P& F3 o7 a$ AI love the way you say (put) things in your letters. You make even the smallest incident seem so interesting(important)

(charming)(mysterious).

我很欣賞您在信中描述各種事物的手法。您的妙筆使細小的事情都顯得很有趣（重要）（動人）（神秘）。
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) N9 b5 V' U' T9 K) cIt was good (fine)(charming)(thoughtful)of you...

. t0 `+ H' ?  H' o( i9 c承蒙好意（美意）（盛情）（關心）……
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It was nice(characteristically thoughtful) (more than kind) of you...
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* y2 N( |& s* H承蒙好意（特別關心）（十二分好意）……

At the outset, I want to thank you for your kindness to me and for your compliments.

9 ^! L6 ^8 F. e- p首先，我要感謝您對我的友愛和問候。

- J6 S; c# [* ?/ e3 }6 TBelieve me, I am truly grateful for...

6 o! \$ {& J8 A我確實真誠地感謝你……
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: r0 C/ r  b" B$ x3 D4 H# GWe were deeply touched by ...

  a" m- U8 O( F7 \……使我們深受感動。

0 k* v1 N0 s/ K: r5 [* cIt is a hopeless(definite)(positive)understatement to say that I am deeply (sincerely)(truly)grateful.

這就是說「我深深的（真摯的）（真誠的）感謝」遠不足以（不能確切）（不能明確）表達我的謝意。
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It』s generous of you to take so much interest in my work( to give me so much of your time) (to show me so much consideration).

承蒙對我的工作如此操心（為我花費這麼多時間）（對我如此關懷）。
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7 ?6 [$ Q) g/ }' rWe are indebted to you...
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  i) v  R, @7 m; S" [% Y; }2 V我們感謝你……
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- r: b2 _% h) h' w0 wI regret very much that I did not have an opportunity to thank you personally for ...

3 v9 p* H2 U" v: d, b* i未能面謝，深表遺憾。