Players of all ages and levels enjoy the unique challenges this sport offers.

各种年龄和水平的玩家欣赏并喜欢这个运动带来的挑战。

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See this resting heart rate chart which shows the expected heart rate for different ages and levels of fitness.

参见以下静态心律表，不同年龄和体能水平的心律。

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To provide a platform for people of different ages and levels to practice oral English through variety of topics. We have small groups divided according to people's level, or age group.

针对不同年龄阶段及语言程度的人群，以话题讨论形式开展用英语交流平台。

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His team found that levels of stress were highest among adults between the ages of twenty-two and twenty-five.

VOA: special.2010.08.03

Facebook says is has over a billion active users, and that includes an extremely wide range of ages and levels of tech know-how.

CNN: Review: A closer look at Facebook Home

The promise of using alternative methods of education delivery to students of all ages and grade levels is there.

FORBES: South Park's 'A History Channel Thanksgiving' And The Problems With For-Profit Education

We provide our athletes of all ages and experience levels with bi-weekly practices, multisport clinics, individualized coaching, race entry assistance, uniforms, specific training plans and more.

WHITEHOUSE: Champions of Change Blog