We'll do our best to catch up with the advanced world levels.
我们将努力赶上世界先进水平。
All of which, of course, have a positive effect on happiness levels.
当然，所有这些都会对幸福水平产生积极的影响。
Schools in our city provide a variety of optional classes to cater to students of different levels.
我们市里的学校提供各式各样的选修课，以满足不同水平的学生。
To help maximize fitness levels in our town's residents, we should, therefore, equip our new community fitness center with such machines.
因此，为了帮助我们城镇的居民最大限度地提高健身水平，我们应该为我们新的社区健身中心配备这样的机器。
Only when all of us join hand in hand to eliminate noise pollution at all levels, can we have a better environment and a more beautiful future.
只有当我们所有人携手消除各级噪音污染时，我们才能拥有更好的环境和更美好的未来。
Its key objective is to place at the center of recovery efforts measures that would generate higher levels of employment and provide basic social protection for the most vulnerable.
它的关键目标是把能够创造更高水平就业和为最弱势群体提供基本社会保护的措施置于复苏工作的中心位置。
At its most straightforward, a green neighborhood simply means more places for kids to play—which is vital since time spent outdoors is one of the strongest correlates of children's activity levels.
从最直接的意义上说，一个绿色社区仅仅意味着有更多的地方供孩子们玩耍，而这是至关重要的，因为户外活动时间是与孩子们的活动水平最相关的因素之一。
Reducing levels of carbon dioxide in the atmosphere is of critical importance.
减少大气层中的二氧化碳含量极其重要。
To make summer reading easy, we have selected interesting and knowledge filled articles of different levels.
为了使暑假阅读变得容易，我们选择了不同级别的有趣且知识丰富的文章。
What is more significant than any geographical spread is the access that different levels of society had to good-quality products.
比地理上的广阔分布更重要的是，社会的不同阶层都能够获取这种高质量的产品。
In fact, studies indicate that four billion years ago, carbon dioxide levels in the atmosphere were much higher than today's levels.
事实上，研究表明40亿年前大气中的二氧化碳含量远远高于今天的水平。
In Earth's earliest atmosphere, methane and carbon dioxide occurred at much higher levels than at present-a circumstance that was favorable for early life.
在地球最早的大气层中，甲烷和二氧化碳的含量比现在要高得多，这对早期生命来说是有利的。
Early warnings of rising water levels prevented another major catastrophe.
提前发出的洪水水位上涨警报防止了又一次的重大灾害。
This new design will offer undreamed of levels of comfort, safety and speed.
新的设计将提供做梦都想不到的舒适、安全和速度。
When temperatures rise, so do sea levels.
气温升高时，海平面也会上升。
Sea levels are rising, but hopes aren't sinking in the Pacific Islands.
尽管海平面正在上升，但太平洋群岛的希望并没有沉没。
A ten-year-old child can move up through the levels of a video game easily.
一个十岁的孩子可以很容易地在电子游戏中升级。
A ten-year-old child can move up through the levels of a video game easily.
一个十岁的孩子可以很容易地在电子游戏中升级。
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