祝您新年快樂
Dear David,
親愛的大衛：
On behalf of the company, we’d like to wish you a Happy New Year!
謹代表本公司祝您新年快樂，
on behalf of+N.代表wish(v.)祝福、希望
It’s been a great year for our cooperation.
過去這年來與您的合作可說是相當愉快，
has been... 現在完成式cooperation(n.)合作、cooperate(v.)合作
We’re continually amazed at your marketing ideas for our products.
我們對貴團隊的行銷手法感到十分驚豔，
continually持續地=over and over=again and againmarketing idea行銷想法product產品
The cake commercial directed by your team blew up on social media, and even became a pop culture phenomenon.
由您團隊執導的蛋糕廣告在社群媒體上引起熱烈討論，甚至成為一股流行文化現象，
commercial廣告、TV commercial電視廣告、a commercial break插播廣告、advertisement or ad or advert廣告(泛指)blow up爆破、爆紅pop culture流行文化phenomenon現象、(pl.)phenomena
Now people associate our brand with a very young and powerful image.
且幫我們塑造了年輕有活力的形象。
associate A with B 把A與B聯想在一起powerful(adj.)強而有力的image形象
As for the coming year, we’ll still be relying on your team’s marketing strategies to promote our honey cake series.
未來一年，仍需仰仗貴團隊的行銷策略宣傳我們的蜂蜜蛋糕系列。
the coming year來年=next yearrely on仰賴=depend onstrategy策略promote(v.)宣傳honey cake蜂蜜蛋糕
Lunar New Year is just around the corner, so we’re looking forward to yet another great opportunity to work with you.
農曆新年就快到了，我們也期待再一次與您合作的機會。
Lunar New Year農曆新年be around the corner=be coming soon就要來到so所以=therefore、因果關係連接詞look forward to+N.期待opportunity機會work with sb.與某人合作
Once again, we thank you for all your work this year and wish you a Happy New Year.
再一次感謝您這一年來的付出，並祝您新年快樂。
once again再一次
Nate Geller
奈特‧蓋勒
Vice General Manager
副總裁
vice-副的、VP=veep=vice president副總統
Honey Galore Food Company
豐蜜食品公司
galore(adj.)大量的food company食品公司