the reason(s) is (are) as follows
A set phrase used to introduce an explanation or list of reasons, often in formal or written contexts. Literally 'the reason like the left', referring to text written to the left (or below) in traditional vertical writing.
左のような訳で、本日の会議は延期となりました。
For the reasons as follows, today's meeting has been postponed.
左のような訳ですので、ご理解のほどよろしくお願いいたします。
As the reasons are as stated below, we ask for your understanding.
A fixed expression combining 左 (left, referring to text written to the left in traditional vertical writing) and 訳 (reason). The phrase literally means 'the reason like the left' and is used to introduce an explanation that follows.