But personally I believe a business letter should end with Very truly yours, not Sincerely.
还行,乔治。但是我个人相信一封商业信函应该以“敬上”结尾,而不是“谨启”。
This hobby educates one not only in the chosen subject, but also in general matters which have some bearing on it.
这种爱好不仅能使人从选择的专题中受到教育,而且也能从与之有关的一般事物中获得长进。