透气的英文：
breathe freely

参考例句：

Permeability coefficient
透气系数

Protect tummy button from catching cold. Absorbent, ventilate.
保护肚脐以免受凉，吸汗、透气。

An impermeable cover is utilized to impound the stream
用不透气的覆盖物把蒸气盖住。

On ground of raised beds, an impermeable cover is utilized to impound the steam
在地面上高位栽培床用不透气的覆盖物把蒸气盖住。

The permeation constant of gases through metals is negligible except for hydrogen through palladium or iron.
除了氢气能穿过钯和铁之外,气体穿过金属的透气常数是可以略而不计的。

Leather uppers allow the feet to breathe.
皮革鞋帮使脚得以透气。

I knew they were just thatch and must be brittle, porous and light.
我知道那是茅草屋，盖得薄薄的，轻而透气。

I knew they were just thatch and must be brittle, porous, and light
我知道那是茅草屋，盖得薄薄的，轻而透气。

So I had held my breath all that time for such a trifle
原来，为了这样一件小事，我却一直紧张得不敢透气呀。

breathe是什么意思：
v. 呼吸；吐露；散发香气；低语；为…带来；松口气；（风）轻拂；使喘息

There was not a breath in the air.
一丝风也没有。

The doctor asked me to breathe in, then to breathe out fully.
医生让我先吸气，然后全部呼出。

The doctor told me to breathe in and then breathe out slowly.
医生叫我吸气然后慢慢地呼出。

He made a deep breath.
他深深地吸了一口气。

There is a breath of autumn in the air today.
今天的天气已露出了一丝秋天的气息。

freely是什么意思：
adv. 自由地；经常地，大量地；直率地；慷慨地；免费地；自愿地；顺畅地

He gives freely to charity.
他慷慨捐钱给慈善机关。

All the rest is freely available.
其余全部是免费提供的。

George was spending very freely.
乔治花钱大手大脚。

The Woodstock generation attempted to swing freely.
伍德斯托克一代试图自由地赶时髦。

The painting featured freely brushed strokes.
那幅画以随意的笔划为特色。