The gas, which is not covered by existing regulations to protect ozone, is now the largest ozone-depleting substance produced by human activity, the research shows.

该研究表明，这种未受现行的保护臭氧层法规管制的气体，现在是人类活动所产生的破坏最大的臭氧层破坏物质。

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He also speculates that slime could protect bacteria from high levels of toxic gas.

他同时猜测粘液能够保护细菌免受有毒气体的侵害。

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The ice cap could be thinner and still protect water if it were topped with a layer of frozen atmospheric gas, such as dry ice, which is solid carbon dioxide.

若冰层上方还存在一层固态气体层，如干冰——二氧化碳的固态形式，维持液态水存在的冰层厚度要求就能相对降低。

youdao

Though there are many challenges ahead, the presentations and discussions indicated that it just might be possible to produce gas, protect biodiversity and improve the livelihoods of the local people in northern Mozambique.

FORBES: Producing Gas and Protecting Biodiversity in Mozambique

Finally I cornered it in the TV room, a gas detector to protect against leaks in the gas fireplace.

FORBES: Hurricane Irene Sparks An Electronic Counterattack

In the Gulf, meanwhile, American, British and Bahraini ships are involved in a joint exercise to protect gas and oil installations.

ECONOMIST: Be very afraid, please