In contrast, this paper describes a network planning tool that USES a fundamental mechanism within a constraint-based planning engine.

相比之下，本文描述了网络规划工具，在基于约束规划引擎使用一个基本机制。

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They have been planning on eventually migrating to competing search engine called Lucene.Net.

他们已经规划出迁移到竞争的搜索引擎Lucene.Net上。

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You shouldn't wait for your website to be online to work on your SEO, planning ahead is the best way to take the right path to search engine optimization success.

你不必等到网站上线后才开始做SEO，一开始就做好规划是搜索引擎优化成功的正确步骤。

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Ahead of next year's challenge, the team are planning to upgrade the engine in their energy-efficient vehicle.

BBC: Car built by Wiltshire pupils clocks 2,000 mpg

The Lockheed Martin F-35C that the Navy is officially planning to buy is a stealthy, single-engine strike fighter derived from the same technologies as the Air Force F-35A and Marine Corps F-35B.

FORBES: Outcome Of Three Programs Will Drive Defense Sector Consolidation

In America, the antitrust authorities have even allowed the pair to form an alliance to compete with Rolls-Royce to supply an engine for the super-jumbo that Boeing was planning until recently.

ECONOMIST: Aircraft engines