The other way to preserve system environment variables is to use the Defaults! Env_reset directive, like in sudoers.

保留系统环境变量的另一种方法是在sudoers中使用Defaults ！

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Medical devices standards system in EU is composed of directive, harmonized standards and conformity assessment procedures.

欧盟医疗器械标准管理体系由指令、协调标准以及符合性评估程序组成。

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Classroom teaching is the main channel of carrying out new curricular, while the teaching evaluation system has a directive function of classroom teaching.

课堂教学是新课程实施的主渠道，而课堂教学评价又对课堂教学起着强烈的导向作用。

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The new immigration directive could also help resolve immigration snafus that that system has created.

CNN: Joy, criticism greet immigration policy move

It has, after all, appealed to the Seoul High Court to try and reverse a directive by South Korean regulators to sell the Windows operating system and Windows Media Player separately there.

FORBES: Magazine Article

One smart proposal has at least some support from both sides: a confidential data-collection system to identify defective products that are still on the market, track cases and determine how well the directive is working.

FORBES: Sue Everywhere