Folk play training is little effected by children's initial play level. After training, children's play level has been improved in general.

儿童原有游戏水平并不影响民间游戏训练的效果，训练后儿童的游戏水平整体上均有所提高。

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Psychological preparation before competition is precondition and guarantee of bringing into play level of physical force, technic and tactics.

赛前心理准备是临场发挥体能、技术、战术水平的前提与保证。

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We should play an active role in politics, both at the national and local level.

我们应该在国家和地方层面的政治生活中扮演积极主动的角色。

《柯林斯英汉双解大词典》

When he returned, he knew he had raised his level of play.

VOA: special.2010.06.02

This level of knowledge, these layers of knowledge, lead to very different play in the game.

这个是知识层面的问题了,这些知识层面会导致不同的结果

耶鲁公开课 - 博弈论课程节选

American fan Peggy Whitney agreed. "Hopefully the other countries will get stronger as the years progress, bring their level of play up to the Canadians and the Americans."

VOA: standard.2010.02.15

Carlos Diaz, founder and CEO of Kwarter, a San Francisco-based app developer, recognized the by-the-minute involvement of sports fans watching live games, and he wanted to create a product that could actively engage those fans at a play-by-play level.

FORBES: New iPhone App Rewards Sports Fans For Watching Games

As an exercise, assume that Granderson and Teixeira, if healthy, would play at their established level in April, and that their substitutes will play at the theoretical replacement level.

WSJ: Tim Marchman: The Yanks Aren't in Trouble��Yet

Hitman: Absolution encourages you to play a level multiple times to experiment with different approaches.

FORBES: Review, Hitman: Absolution