以前家长会的日期和时间都是家长和老师约定的，但家长会以外的交流很少。
It used to be that parents and teachers had set days and times for parent-teacher meetings, but there was little communication outside the meeting.
包含的所有客户机和服务器都在同一地区，所以它们都使用相同的显示语言、日期约定等。
All of the client and server machines involved have the same locale, so they all use the same display language, date conventions, and so on.
根据定义，如果那些所选择的特性不具有约定的质量或完整性，那么我们的发布日期将延迟。
By definition, our release date will be postponed if those selected features are not of the agreed quality or completeness.
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