我再不做有氧健身操了—太累人了。
我想进一个有氧运动班来增强我的体质。
我参加了有氧健身班。
其他行星上没有氧气，这意味着这些行星缺乏保护生命体免受紫外线辐射的臭氧层。
The absence of oxygen on other planets means that those planets lack an ozone shield to protect life forms against UV radiation.
在这种有氧健身运动出现之前，市面上已经有不少健身水疗会所，在大城市甚至有全国性的连锁机构。
A number of fitness spas existed prior to this aerobic fitness movement, even a national chain with spas in most major cities.
在火星和我们太阳系的其他行星上没有氧气，这意味着这些行星也缺乏保护地表生物免受紫外线辐射的臭氧层。
The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.
然而，他们的重点并不是有氧运动，而是负重训练项目，旨在培养主要客户男性健身爱好者的培养肌肉质量、力量和耐力等。
However, their focus was not on aerobics, but rather on weight-training programs designed to develop muscular mass, strength, and endurance in their primarily male enthusiasts.
他计划在没有氧气罐的情况下攀登，只有少数登山者做到了这一点。
He planned to climb it without oxygen tank, something only a few climbers had managed to do.
当空气温度较高时，含有较重同位素氧-18的蒸汽比含有氧-16的蒸汽更容易凝结，并形成雪状的降水。
When the air was warm, vapor containing the heavier isotope, oxygen-18, condensed and formed precipitation, in the form of snow, more readily than did vapor containing oxygen-16.
这个动作比起跳舞，更像锻炼，这就是为什么一家大公司称其为有氧健身舞。
The action is more like dancing than exercises, that's why one big company calls it dancercise.
剧烈的有氧锻炼感觉象什么？
有氧活动应该每次至少持续10分钟。
Aerobic activity should be performed in bouts of at least 10 minutes duration.
进行有氧体能测试：快步走。
选择中度的或者剧烈的有氧(耐力)锻炼。
负重有氧锻炼，比如走路，减少骨质疏松的发病。
Weight-bearing aerobic exercises, such as walking, reduce the risk of osteoporosis.
大气中如果没有氧和氮，人就无法生存于地球了。
If it were not for oxygen and nitrogen in the air, no man could live on the earth.
那比起表格或者有氧健身器的读数更为准确。
That will be more accurate than relying on tables or cardio machine readings.
那些连接着没有氧气的肺动脉中的血液需要更新。
Those that link to the pulmonary arteries carry deoxygenated blood that needs to be refreshed.
就是说每个分子也都含有氧原子以及在烷烃中存在的碳和氢。
That means each of its molecules contains an oxygen atom as well as the carbon and hydrogen found in an alkane.
一个处理方法是将它们在没有氧气或者氧气稀薄的情况下烘干。
One way of dealing with them is to dry them and then heat them with little or no oxygen present.
我以前都是上普通的有氧操班，但是练久了就会觉得枯燥乏味。
“I used to take a normal aerobics class, but it was boring and monotonous, ” Ms. Xiao said.
这个跑步者的有氧跑步心率就为132 ~ 150跳每分钟。
This runner's average range aerobic heart rate zone stays between 132 to 150 beats per minute.
有氧健身在预防疾病方面，远不如拥有正常的身体质量指数重要。
Being aerobically fit was far less important than having a normal body mass index in preventing the disease.
然后，由通常含有氧化锂的盐溶液，吸收制冷剂的蒸气。
Then a salty solution, commonly containing lithium bromide, absorbs the refrigerant vapours.
然后，由通常含有氧化锂的盐溶液，吸收制冷剂的蒸气。
Then a salty solution, commonly containing lithium bromide, absorbs the refrigerant vapours.
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