You can make your flights carbon neutral by planting trees to make up for the greenhouse gas emissions.

你可以通过种树抵消温室气体排放，这样你的飞行就可以做到碳中和。

《柯林斯英汉双解大词典》

Explanation: Delicate in appearance, these filaments of shocked, glowing gas, draped in planet Earth's sky toward the constellation of Cygnus, make up the Veil Nebula.

解释：从地球仰望星空，笼罩在天鹅座周围的那些外观精美、如细丝般令人震撼的发光气体，形成了面纱星云。

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Shale gas, extracted from rock by the controversial process of fracking, will make up a fifth of supplies by that date.

通过颇有争议的提取过程从岩石中提取出来的页岩气，到2035年将构成第五大供给能源。

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The North Slope natural gas hydrates make up 11.5 percent of the volume of gas within all other undiscovered, technically recoverable gas resources in the United States -- frozen or not, the USGS estimated.

CNN: Study: Tap natural gas from Alaska's frozen areas

Oil and gas still make up two-thirds of Russia's exports.

ECONOMIST: Russia's presidency

Its immense shale-gas potential might make it even less willing to pay up, inclining it to depend less on pipeline gas and to take the risk that it can smooth out ebbs and flows through spot markets.

ECONOMIST: Shale gas should make the world a cleaner, safer place