Physical activity is an important factor in maintaining fitness.
体育活动是保持健康的一个重要因素。
Maintaining relationships over the long term takes effort.
长期维持关系需要努力。
Maintaining world peace is our unshirkable internationalist duty.
维护世界和平是我们义不容辞的国际主义义务。
Maintaining a high body temperature through sheer bulk is called gigantothermy.
通过绝对体积来维持高体温的方法被称为惯性恒温性。
Healthy eating and physical exercise are ways of maintaining general good health.
健康饮食和体育锻炼是保持健康的方式。
That level of precision is critical to the snake for maintaining its body temperature.
对于蛇来说，这种精确度对于保持体温至关重要。
Avoiding these features is important for defining and maintaining interpersonal relationships.
对于界定及维护人际关系来说，规避这些特性很重要。
Chris is in charge of purchasing and maintaining equipment in his Division at Taxlong Company.
克里斯在Taxlong公司，他的部门里，负责购买和维护设备。
Predators are an essential factor in maintaining communities that are rich and diverse in species.
捕食者是维持群落物种丰富多样的一个重要因素。
This included both the public and private costs of building, maintaining and using a transport system.
这包括建造、维护和使用交通系统的公共成本和私人成本。
Possibilities for trade seemed promising, but no hope existed for maintaining the traditional routes over land.
贸易似乎有诸多可能性，颇有前景，但维持陆地上的传统路线就根本没有希望了。
There is generally little doubt that fire is a significant factor in maintaining savanna, certainly in most regions.
火灾是维持稀树草原的一个重要因素，在大多数地区都是如此，（人们）对此通常很少有疑问。
To see a game through to the final whistle while maintaining high performance, a player needs to be as fit as a fiddle.
要想在保持高水平表现的同时把比赛进行到底，运动员需要非常健康的身体。
Maintaining harmony at home is essential for the well-being of an individual, a couple and their offspring, and even the society.
维持家庭的和谐，对个人、夫妻、后代乃至整个社会都是至关重要的。
According to the benefits principle, the wealthy should contribute more than the poor to the cost of maintaining the police force.
根据利益原则，在维持警察队伍的费用方面，富人应该比穷人贡献更多。
China needs to strike a balance between maintaining a relatively fast and stable development and making economic structural adjustment.
中国需要在保持经济相对快速稳定发展和调整经济结构之间取得平衡。
Even the traditional chefs are aware of the need to adapt to local tastes and customs, while maintaining the Britishness of their cuisine.
即使是传统的厨师也会意识到，要在保持他们的菜肴的英国特色的同时适应当地的口味和习俗。
Therefore, according to the benefits principle, the wealthy should contribute more than the poor to the cost of maintaining the police force.
因此，根据利益原则，富人应该比穷人贡献更多的维持警察部队工作的费用。
Maintaining safe speeds and being electric, self-driving cars would drastically reduce pollution levels and dependency on non-renewable fuels.
保持安全速度和电力驱动的自动驾驶汽车将大幅降低污染水平，减轻对不可再生燃料的依赖。
What this means is that we have to maximize the benefits and uses of urban parks, while minimizing the costs of building and maintaining them.
这意味着我们必须将城市公园的效益和用途最大化，同时将建设和维护它们的成本降到最低。
They have evolved special "heaters" of modified muscle tissue that warm the eyes and brain, maintaining peak performance of these critical organs.
它们进化出了一种特殊的“加热器”，由经过改造的肌肉组织构成，可以温暖眼睛和大脑，使这些关键器官保持最佳状态。
Maintaining a level of daily physical activity may help mental functioning, says Carl Cotman, a neuroscientist at the University of California at Irvine.
加州大学欧文分校的神经学家卡尔·科特曼表示，每天保持一定的体育锻炼可以促进心理机能。
Maintaining this environment is very costly, and recent research shows that even old oil paint is unaffected by wide fluctuations in temperature and humidity.
维护这样的环境是非常昂贵的，而且最近的研究表明，即使是旧的油画也不会受到温度和湿度大波动的影响。
The electricity companies spend a lot of money each year, cutting the harm of transformers, trying to quiet the noise and maintaining equipment that is constantly affected by vibration.
电力公司每年花费大量资金，减少变压器的危害，试图降低噪音，维护经常受到振动影响的设备。
The more students who enroll in a course but don't come to campus, the more the school saves on keeping the lights on in the classrooms, paying doorkeepers, and maintaining parking lots.
报名参加课程但不来校园的学生越多，学校在教室照明、支付门卫工资和维护停车场方面节省的开支就越多。
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient but still carry great cost.
不断变化的建筑规范、人们逐渐发展的品味，以及维护这些精美的旧标志牌的高昂成本，让企业欣然接受了发光二极管。它们节约能源，但成本仍然很高。
Reasons for hospital teaching range from preventing a child falling behind and maintaining the habit of school to keeping a child occupied, and the latter is often all the teacher can do.
医院教学的原因从防止孩子落后和保持学校的习惯到让孩子被占着，而后者往往是老师所能做的事情。
Changing building codes, evolving tastes, and the high cost of maintaining those wonderful old signs have businesses embracing LEDs, which are energy efficient, but still carry great cost.
变化的建筑法规，不断发展的品味，加上保养这些美丽而老旧的指示牌所需的高昂成本，都让商家们更欢迎LED 灯，虽然 LED 灯节省能源，但是成本依然很高。
The government is maintaining a heavy police presence in the area.
政府在这地区派驻了大批警察。
A restaurant has to tread the tricky path between maintaining quality and keeping prices down.
餐馆必须在保证质量和价格低廉之间走出一条困难的折中之路。
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