這一篇是在說明Push Technology
這一句我翻得不通順
Push technology, or server push, describes a style of Internet-based communication where the request for a given transaction is initiated by the publisher or central server.
或稱server push 描述以網際網路為基礎,由發佈者或中央伺服器發起交易的請求的一種通訊種類
It is contrasted with pull/get, where the request for the transmission of information is initiated by the receiver or client.
它被拿來與pull或get比較，由接收者或客戶端發出傳輸資訊的請求
express in advance 不知道如何翻譯
Push services are often based on information preferences expressed in advance.
Push服務通常基於資訊偏愛
麻煩給我一些建議 謝謝 ^_^