There are four methods to solve the problem in this passage.

在这篇文章中有四种方法来解决这个问题。

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EAI is one of methods to solve the problem.

EAI是解决这一问题的方法之一。

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The present paper analyzes the causes and puts forward several methods to solve the problem in the different stages of construction.

本文通过对建设项目环境污染的原因进行分析，提出了在项目不同阶段解决建设项目环境污染的一些见解和方法。

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To get to that point, though, they had to learn from and defeat the techniques of 72 other teams and competitors, all from different backgrounds and using different methods to solve the problem.

FORBES: Mapping The Universe Through Collective Brainpower

Ding, Senior Investigator at the Gladstone Institute of Cardiovascular Disease and a professor at University of California San Francisco, is one of the scientists aiming to solve this problem by generating stem cells using chemical methods.

FORBES: Scientist Shows How Small Molecules Generate Better Stem Cells