If you aren't using certain superglobals (such as environment variables), you can safely remove them to gain a small speedup from not having to parse them on every request.

如果您没有使用某种超全局变量（比如环境变量），您可以安全地删除它们来获得一点加速，从而避免在每一个请求上解析它们。

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In order to protect our environment, immediate actions should be taken, such as stopping cutting down trees.

为了保护环境，我们应立即采取措施，例如停止砍伐树木。

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Scientists believe that personality characteristics such as friendliness, shyness and fears are not a result of environment.

科学家认为，诸如友善、害羞和胆怯等性格特征不是环境造成的。

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Hundreds of indicators are used to measure progress in areas such as education,health,poverty, the environment and trade.

VOA: special.2010.04.26

The foundation works on issues such as education,health,environment and community development.

VOA: special.2009.11.25

"I think the prospects are good." "There are a lot of players that have come in - and there's a lot of support from organizations such as the WHO I think that creates a good environment where people can work and make progress in getting together a new vaccine."

VOA: standard.2010.07.12

The CBI also said it was opposed to plans by the executive to launch a review on whether third parties, such as environment groups or local residents, should be able to appeal after planning approval is granted to companies by local councils.

BBC: A factory worker

After all, the firm supports worthy causes such as the environment and inner-city education.

ECONOMIST: Raspberry rebels | The

Apart from economic matters, Russia and China also cooperate in areas such as the environment and diplomacy.

FORBES: The Russian Bear And The Chinese Dragon