Constructivist learning theory insists that learning is the knowledge construction mainly by students.

建构主义理论强调学习是以学生为主的知识建构。

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While theory insists that working with only one test suite is possible, this is unmanageable in practice.

虽然理论上可以只使用一个测试套件，但是在实践中这种情况难以管理。

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No natural law theory can be accepted, he insists, that attempts to lay down in advance an eternal, unchanging code of nature.

没有任何的自然法理论是完全被公认的，他坚持尝试放弃永恒的、不变的代码。

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You see, the whole theory of green taxation insists that there is a correct level of taxation and correct in this sense does not mean ever higher.

FORBES: The Problem With Green Taxation

Since, in theory, at least and in public the ECB insists that its only target is inflation (and not, unlike America's Federal Reserve, economic growth as well), the principal uncertainty for Mr Duisenberg and his colleagues is the possible inflationary impact of recent currency swings.

ECONOMIST: Watching out for the great bear | The