消息必须采用 XML 格式，但允许有二进制的附件。

The messages must be in XML, except for binary attachments.

youdao

Opt - in用户—不上传个人信息但允许系统显示引用他的信息的用户。

Opt-in user - a user who does not upload personal data to the system, but allows the system to display information referenced to him.

youdao

和192.168.9 .的telnet访问，但允许192.168.6。

To refuse Telnet to the following IP's, 192.168.8. and 192.168.9., but allow Telnet access from 192.168.6., I could use.

youdao

So, it's perfectly okay to be part of a collaboration, but you've got to make sure that you're pulling your weight.

所以,参与小组讨论是完全允许的,但你要保证你在其中有所作为

耶鲁公开课 - 基础物理课程节选

Of course, the Greeks only allowed men to fight in the phalanx, but we are much more elevated than that.

当然,希腊人的方阵中只允许男人参战,但我们比那时可开化多了

耶鲁公开课 - 古希腊历史简介课程节选

The closed system allows energy to transfer through the boundary but not mass.

闭系允许能量通过它的边界传递,但质量不行。

麻省理工公开课 - 热力学与动力学课程节选