在第七个长度，开始每划换气。
安装灶具的房间必须安装强力换气扇。
The room installed with stoves should have powerful ventilator.
医生建议她换换气候环境以便恢复健康。
我使用向前的动作看一下然后一侧换气。
I use the forward motion to look and then breathe to the side.
窗户很少打开通风换气。
当增加氡换气扇时，可进一步降低氡的水平。
When radon ventilation fans are added radon levels can even be reduced further.
恐惧中的人可能会每分钟呼吸30次。这是“换气过度”。
Someone panicking can take as many as 30 breaths a minute. This is “hyperventilation”.
通风换气可以降低密闭空间内的污染物水平，研究者们如是说。
Ventilation can help reduce the level of pollutants in closed rooms, the researchers said.
人们往往会屏住呼吸，或吸入过多的氧气或换气过度。
People often hold their breath, or take in too much oxygen and hyperventilate.
当然要换气了。
有些孩子能够跑完游泳池的全长而不用露出水面换气。
Some children can cover the whole length of the pool without coming up for breath even once.
当角鲸浮到海冰之间的缝隙处换气时，数据会自动发往卫星。
The data were automatically sent to a satellite when the narwhals surfaced for air between cracks in the sea ice.
冬天尽量减少通风机的使用，比如浴室换气扇和厨房油烟机。
Minimize your use of ventilation fans such as bathroom fans and kitchen hood fans in winter.
如果是为了享受令人惊叹的潜水，请用海藻塞住潜艇换气装置。
If this is amazing snorkeling, please jam our snorkels with seaweed.
安娜·贝利呼吸太快了，以至于茱莉亚觉得她得了过度换气症。
She was breathing so fast that Julia thought she was hyperventilating.
但这首歌的难处在于需要不断的换气、发声，所以我要反复练习。
But the song requires continuous breathing and voicing, which is hard, and I had to practice it over and over again.
如果你仅仅只用一侧换气，那将几乎不可能维持一个对称的划水。
If you only breathe to one side it's nearly impossible to maintain a symmetrical stroke.
通过耐心的等待手臂入水，我可以把我的换气动作隐藏在波谷里。
By being patient and waiting until my hand enters, I can hide the breath behind the bow wave.
即使是换气的时候，你的身体都可以保持一条直线，从指尖到脚趾。
Even during the breath, you could run a straight line from my fingertips to my toes.
有些孩子甚至可以做到一直跑到游泳池的另一端都不露出水面换气。
Some children can cover the whole length of the pool without coining up for breath even once.
墙壁、屋顶需要用双层材料，托盘木架还可用来做通风换气、防晒遮阳的架子。
Two layers of pallets serve as the home’s walls, ceiling, and as a sunscreen to shade the structure and allow for ventilation.
冰上的孔穴生活在水中的哺乳动物，如海豚，前来换气的冰面上的孔。
A hole in ice to which aquatic mammals, such as dolphins, come to breathe.
这里有个练习方法将会帮助你在换气时保持平衡和获得持续前进的动力。
Here's a drill that will help you maintain balance and forward momentum during the breath.
那个小男孩非常自豪，因为他已经可以游完游泳池的全长而不露出水面换气。
The little boy was proud that he could cover the whole length of the swimming pool without coming up for breath.
他计划在控制室的顶上装一套太阳能驱动的换气系统，将空气泵到设施的深处。
His plans involve building an air shaft through the roof of the control center equipped with a solar powered fan to draw air deeper into the complex.
该系统还有探测各种来自动物或工厂不良气味的功能，并且能够按照需要自动打开换气装置。
The system will also be able to detect various other bad smells - such as from animals and factories - and will automatically switch the ventilation on if required.
一条白鲸每游半英里就得浮出水面换气，而巴芬湾的未冻水域还有13英里之遥。
A beluga needs to surface for air about every half mile; free flowing water was more than13miles away in baffin bay.
一条白鲸每游半英里就得浮出水面换气，而巴芬湾的未冻水域还有13英里之遥。
A beluga needs to surface for air about every half mile; free flowing water was more than13miles away in baffin bay.
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