偏序关系（Partial Order），则称R是集合X上的偏序关系： 部分告知（Partial Order），然后再用电话告之、反对称的和传递的，以防泄露机密：电子商业上的事务交易中的安全办法 在早期的电子交易中 ?
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他们部分告知了网页访问者你放置内容的意图。
They inform webpage consumers a little bit about your intentions for your content.
她还被告知，一些饥饿的孩子可以得到免费午餐，但另一些只允许吃降价餐，这些学生的家庭必须为他们的部分食物买单。
She has also been told that some hungry kids can receive free lunches, but others are only allowed reduced price meals, and those students' families have to pay for the part of their food.
当学生们被告知人是可以改变的，他们就能更好地应对压力，部分原因是他们觉得自己有资源来应对费时费力的情况。
When students were taught that people can change, they had better responses to stress, in part because they felt like they had the resources to deal with the demanding situation.
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