When you want to use envelopes to send a mass mailing to your address list, you can use mail merge to create a batch of envelopes.是什么意思_When you want to use envelopes to send a mass mailing to your address list, you can use mail merge to create a batch of envelopes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句