Any accidental release of fluorine could also be an issue: fluorine is a toxic and corrosive gas and, at high concentrations, can retard plant growth and damage teeth and bones.

氟气的任一次意外泄漏也都可能造成问题。氟气是一种有毒的腐蚀性气体，而且，在高浓度时，能阻碍植物生长并，损伤牙齿和骨骼。

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The issue is that Kyoto is the only legal treaty compelling rich nations to slash their greenhouse gas emissions.

问题是，《京都议定书》是强迫富裕国家大大削减温室气体排放的法定协议。

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Ukraine accuses the Russians of seeking to exploit the arrears issue as a means of gaining control of the country's gas network.

乌克兰指责俄罗斯方面以债务问题为手段来攫取对乌克兰天然气网络的控制权。

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The National Highway Traffic Safety Administration has linked more than 50 deaths to the unexpected acceleration problems -- a safety issue Toyota has blamed on floor mats and sticky gas pedals.

VOA: standard.2010.03.26

You've got to put more pressure on one side than the other if you want to push that gas through the throttle, right? So this is where the time scale issue comes into play.

如果你想让更多的气体通过节流阀,应该使一边的压强,大于另一边，是吗？所以这就是,时间尺度发挥作用的地方。

麻省理工公开课 - 热力学与动力学课程节选

Ironically, the heat has gone out of the gas issue.

ECONOMIST: Bolivia's troubles

At his party's weekly policy lunch, Mr. Schumer told his colleagues to use next week's Senate recess to get in front of the gas issue, by once again blaming rising prices on "speculators" and oil companies.

WSJ: Schumer's Nouveau 'Speculators'

So this gas issue is serious.

WHITEHOUSE: Shared Responsibility and Shared Prosperity Town Hall