It's ironic that the entire Web is on a push model, yet the browser-the most fundamental tool of interacting with the web-is on a pull model.

讽刺的是，整个互联网都属于push模型，但是浏览器，这个与网络交互的最根本的工具，却是pull模型。

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Power flow calculation is the most important and fundamental tool for the analysis of any power system.

潮流计算是电力系统分析最基本和最重要的工具。

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A 3d visualization system for mineral deposits is an important means to understand the spatial distribution of mineral grades, and a fundamental tool for computer aided design and planning of mines.

矿床三维可视化是正确认识矿物赋存的重要手段，也是进行采矿工程设计与布置的基础。

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These presidents understood that diplomacy backed by real leverage was a fundamental tool of statecraft.

NPR: Transcript: Obama's Speech at AIPAC

Knowledge of rights and freedoms is considered a fundamental tool to guarantee respect for the rights of all.

UNESCO: Human Rights Education in Scotland

Summary: Over the past decade, content marketing, specifically in the form of online video, has become a fundamental tool for connecting with consumers.

FORBES: Marketing and Sales