求翻译：5.2 合同中无论何处所涉及各方之间的通讯都不应无理扣压或拖延。委托人、咨询人应在专用条款中约定各方通讯地址和收件人，并按约定发送通讯。收件人应在通讯回执上签署姓名和时间。一方拒绝签收另一方通讯，另一方以特快专递、挂号信等专用条款约定的通讯方式将通讯送至通讯地址的，视为送达。是什么意思？

5.2 Contract wherever involved in the communication between the parties should not be unreasonably withheld or delayed. Principal, the consultant should be in the special terms and conditions agreed upon parties Address and recipients, and send communication as conventions. The recipient in communic