求翻译：商务英文电子邮件通常用较正式的称呼，如：Dear+对方的姓氏，有时可以省去Dear，直呼对方的名或姓，或者用随意的称呼，如：“Hi，Johnson”，“Hi，Davis”等。若不能确定收件人是哪一位，可用这样的表达，如：“Dear Sirs”，“Dear Madam or Sir”或“To whom it may concern”等。是什么意思？

Business English e-mail usually use the more formal title, such as: dear + surname, and sometimes can save the dear, to call each other by first name or last name, or a random address, such as: "hi, johnson", "hi, davis "and so on. If you can not determine the recipient is an available such expressi

Business English e-mail is usually used in a more formal salutation, such as: Dear + each other's last name, and sometimes it can be omitted, Dear has been called the first or last name, or use random names, such as: " Hi, Johnson" and the "Hi, Davis", and so on. If you are not sure which one recipi

The commercial English email usually uses the official name, for example: Sometimes the Dear+ opposite party surname, may omit Dear, shouts opposite party name or the surname straight, or uses at will name, for example: “Hi, Johnson”, “Hi, Davis” and so on.If cannot determine which one the addressee

Business e-mail is usually more formal salutation in English, such as: Dear+ the other's last name, can sometimes save you Dear, first name or last name of the other party, or feel free to call, for example: "Hi,Johnson", "Hi,Davis" and so on. If you cannot determine who the recipient is, available

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