Cotton bags have become a means for brands，retailers and supermarkets to indicate a planet-friendly mindset-or, at least, to show that the companies are aware of     1     overuse of plastic in packaging.

So far, so Earth-friendly? Not     2     (exact). It turns out the wholehearted acceptance of cotton bags may actually have created a new problem.

An organic cotton bag needs to be used 20,000 times to reduce     3     (it) overall impact of production, according to a 2018 study. That equals daily use for 54 years-for just one bag.

Cotton is water-intensive, and figuring out ways of     4     (deal) with a bag in an environmentally low-impact way is not nearly as simple     5     people think, according to an environmental science professor at the University of Maine.

You can’t, for example, just put a bag in a bin. Even when a bag does make it to a treatment plant, most materials used to print logos onto them are PVC-based and thus not     6     (recycle); they’re “extremely difficult     7     (break) down chemically,” said Christopher Stanev, the co-founder of Evmu, a Seattle-based textile recycling firm. Printed     8     (pattern) have to be cut out of the cloth; Mr. Stanev estimates 10 to 15 percent of the cotton Evrnu receives     9    (waste) this way.

That’s not to say cotton is worse than plastic. In the end, the     10    (simple) solution may be the most obvious. “Not every product needs a bag,” Comey says.

China is emerging as a global leader in aviation (航空) decarbonization (脱碳), according to industry experts. This development is     1     result of the scale of the country’s aviation market and     2     (it) new technologies and policies aimed at reducing carbon emissions (排放), they said.

“As the world’s second-largest economy, China     3     (expect) to be the world’s largest aviation market by 2030. We believe China plays an important part in aviation decarbonization with a deep impact on the decarbonization of aviation     4     (global),” said Martin Thomsen, senior vice-president of Air BP, the specialized aviation division of BP, previously     5     (know) as British Petroleum, a London-based multinational.

“We believe that this will lead to an expansion of SAF production,     6     could supply domestic and global markets     7     play a key role in supporting the decarbonization of supply chains,” he said.

Despite current challenges in raw material supplies, technology and policies, China’s SAF industry faces significant opportunities and     8     (have) certain advantages, said Luo Zuoxian, head of intelligence and research at the Sinopec Economics and Development Research Institute.

It will make important     9     (contribution) in reducing carbon emissions in the aviation industry, helping achieve the carbon neutrality (碳中和) goals and     10     (ensure) energy safety in SAF, he said.