【例】The attached memorandum is prepared for your approval and alteration as required.
①【例】We regret the invoice which you mentioned in your letter was not sent to us.
【例】We should like to mention that the Japanese quotation for electric motors is far more attractive than yours.
【2】not to mention更不用说
【例】We rejected the article for its cost, not to mention its bad quality.
【例】Payment by L/C is the common mercantile practice.