by separate mail

基本解释

We are sending you under separate cover by mail a copy of the latest catalog.
兹另发送我方最新产品目录一份。
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We now work on a new catalog, which you will shortly receive by separate mail.
目前我方正在赶印新的商品目录，将另函附邮，不日即可收到。
To give you some ideas of various types of bicycles we are dealing in, we are pleased to send you , under separate cover , by air-mail our latest catalogue and a price list.
为使你方了解我方经营的各种自行车，我们很高兴令封航邮寄我们的最新产品目录与价格单一份。

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