best-effort delivery

基本解釋

It is a best-effort delivery service, since there is no acknowledgment of sent datagrams.
他有最好的發(fā)送服務(wù)效果，因?yàn)樗恍枰l(fā)送確認(rèn)數(shù)據(jù)包。
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Because it provides a connectionless, unreliable, best-effort datagram delivery service, IP is somewhat limited in scope.
因?yàn)?IP 提供的是無連接、不可靠、最高效的（best-effort）數(shù)據(jù)報(bào)傳遞服務(wù)，所以 IP 的使用范圍多少受到了限制。