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”。
Although the cartons are light and easy to handle, we think it is not strong enough to be shipped.
虽然这些纸箱轻便、易拿,但我们认为它们在运输中不太结实。