Be careful, make sure you know the senders before you open the email.

小心，在你开信箱前要先确定那些寄件人是谁。

Undeliverable postal materials shall be returned to the senders.

第二十三条无法投递的邮件，应当退回寄件人。

In case of non-delivery, letters must be returned to the senders.

函件无法投递时务必退还原主。

The scenario depicted in Figure 1 shows several senders and receivers.

图 1 描述的场景显示了几个消息发送者和接收者。

Japan was fourth among the twenty leading senders of foreign students.

在20个主要留学生的派出国中，日本列第四。

You can set email to flag important messages from senders like your boss.

你可以在电子邮箱中进行设置，把老板等发件人的信息标为重要邮件。

The post office generally will send the dead letters back to the senders.

邮局一般会将挂号的瞎信退给寄信人。

In the best case, a slight extra effort is required for legitimate senders.

在最好的情形下，合法发送者只需花费一点点精力即可。

Messages sent by the senders are identified with a message format identifier.

发送方发出的消息是通过消息格式标识符识别的。

Only Authorized Senders may submit or issue press releases on Customer's behalf.

仅授权发稿人可以代表客户提交或发布新闻稿。

Click Yes to confirm the email address to be removed from the Blocked Senders list.

单击Yes以确认将要从Blocked Senders列表中移除邮件地址。

In response, senders started using botnets (networks of otherwise innocent computers).

作为对策，垃圾邮件发送者们开始使用僵尸网络(由另外一些“无辜”的计算机构成的网络)。

This n: 1 ratio allows SACK senders to overwhelm receivers on much more powerful platforms.

这种N： 1的比例使SACK发送方可以打击非常强大的平台上的接收方。

Messages that would push your account over the storage limit are being returned to the senders.

那些使您的帐户邮箱超出存储限制的邮件将退返给发件人。

These partners set the prices charged to senders and are the ones being squeezed by a price war.

这些合作伙伴制定向发件人收取的价格，是受价格战挤压的一方。

Labour mobility is not a zero-sum game: both senders and recipients win, as new jobs are created.

劳动力流动并非零和博弈：输出方和接受方双赢，因为有新的工作被创造出来。

Legacy method: The JMS Senders and Receivers are tasks and JMS messages and destinations are objects.

遗留方法：JMS Senders和Receivers是任务，而JMS消息和目标是对象。

If senders do not add stamps, you are no worse off for checking; you just aren't better off, either.

如果发送者没有添加戳记，那么您的境况不会因为进行检验而变得更糟；也不会因此变得更好。

You may want to process a select few of your contacts, or create a list of the top senders of E-mail.

您可能需要处理一些特定的联系人，或者创建发送电子邮件最多的人的列表。

Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail.

许多商业电子垃圾邮件的发送者有目的地伪装这些邮件的来源。

Senders can schedule the gift card to appear on the recipient’s Facebook Wall up to a year in advance.

发送者还可以预先设定让礼品卡出现在接受者的Facebook墙上的日期，时间限定在1年之内。

For this reason, senders need to record the message in a reliable store until it is definitely delivered.

为此，发送方需要把消息记录在一个可靠的存储器里，直到确定消息已经发出。

Senders of commercial electronic mail should not mis-lead recipients as to the source or content of such mail; and.

商业性电子邮件的发件人不得在邮件的来源或者内容方面误导收件人。

For senders who do not add hashcash stamps, recipients who check for X-Hashcash: just do not have anything to check.

对那些没有添加hashcash戳记的发送者而言，检验x - hashcash：的接收者不用校验任何内容。

You can solve the problem depicted in Figure 1 by providing a membership level-specific endpoint to each of the senders.

您可以通过给每一个发送者提供一个成员资格级别专门的端点，来解决图1描述的问题。

If Jed requires that senders digitally sign all orders, he can prove that the messages really originated from the vendor.

如果Jed要求发送方数字签署所有的订单，他就可以证明消息却是发自供应商。

For spam senders, he no cost or low cost to them, this is a big profit. even make big profits with no investment matters.

对于垃圾邮件发送者来说，他没有成本或者成本很低，对他们来说，这是一本万利、甚至无本万利的事情。