另外，也介绍了网络需要引入特定的功能实体及系统接口，从而实现与基础网元的组网。

Besides, the function entities together with system interfaces are introduced, which is to interwork with the current network element.

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电信管理网（TMN）作为电信基础网的运营支撑网络系统之一，是电信网的一个重要组成部分。

TMN, as a important part of base telecom network, how to build a effective TMN, is a important project we must confront.

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浮游植物是水生食物网的基础，作为初级生产者，它们是小到微观浮游动物、大到数吨的鲸鱼的食物。

Phytoplankton are the foundation of the aquatic food web, the primary producers, feeding everything from microscopic, animal-like zooplankton to multi-ton whales.

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