The U.S. has been the biggest emitter of greenhouse gases in history.

美国是史上最大的温室气体放国家。

If cement were a country, it would rank as the third-largest emitter, right after China and the US, in front of the European Union and India.

假如水泥是一个国家，将为界第三大二氧化碳放国，仅次于中国和美国，且超越欧盟与印度。

Many of these buildings will be made using cement, a massive emitter of greenhouse gases.

其中有许多建筑将使用水泥制，放了大量的温室气体。

Yossi Yovel trained a statistical model on 15,000 Egyptian fruit bat vocalizations, which was able to identify the emitter of the call, the context of the call, its behavioral response, and who the call was addressed to.

约西·尤维尔训练了一个统计模型，使用了 15000 个埃及果蝠的发声，能够识别呼叫者、呼叫的背景、行为反应以及呼叫的对象。

It means more independent organizations are measuring greenhouse gases and identifying big emitters.

这意味着更多的独立组织正在测量温室气体并确定大型放者。

Is the world's largest carbon dioxide emitter seriously doing that?

这个界上最大的二氧化碳放国是要动真格的吗？

Eventually, the laser exits the emitter and is passed on to the galvo head, where it's reflected by two mirrors moving as fast as 10,000 millimeters per second, which guide the laser beam to its target.

最终，激光离开发射器，被传递到镭射头，在那里，被两面以每秒 10，000 毫米的速度移动的镜子反射，这将激光束引导到目标。

Since the United States and China worked together to set ambitious climate targets last year, leading by example, many of the world’s biggest emitters have come forward with new climate plans of their own.

自从美利坚合众国和中国在去制定宏伟的气候应对目标后，受榜样的影响，全球很多碳放大国都积极跟进，重新制定了各自的气候应对计划。

When measuring these gases based on consumption, rather than manufacturing, the biggest emitters are mainly cities in North America and Europe. The study found their emissions were 60 percent higher than currently estimated.

在消耗类数据而非制造业数据的基础上测量温室气体放量时，可以发现，放温室气体最多的地方主要是北美和欧洲的城市。该研究发现，这些城市的温室气体放量要比当前估测的高60%。

Red meats are among the biggest and most notorious emitters, but trucking a salad from California to Minnesota in January also carries a significant burden.

生产红肉是最广泛和最臭名昭著的放物之一，但其实一月份，卡车将沙拉从加利福尼亚运到明尼苏达州也是一个巨大的放物负担。

So much food in fact that if food loss and waste were a country it would be the third largest emitter of greenhouse gases.

事实上，如果把粮食损失和浪费看作是一个国家的放量，那么这个国家将是第三大温室气体放国。

This is because the emitted carbon dioxide does harm to the environment, almost all of which is felt by people other than the emitter.

这是因为放的二氧化碳对环境有害，几乎所有这些影响都由放者以外的人感受到了。

The two largest economies in the world and the two largest carbon emitters. We have both determined that it is our responsibility to take action.

中国和美国是界上最大的两个经济体，时也是界上最大的两个碳放国。我们两国都已下定决心，我们有责任采取行动。

One of the world's biggest emitters of greenhouse gases, India, has for the first time committed itself to a target for reaching carbon neutrality.

作为界上最大的温室气体放国之一，印度首次承诺实现碳中和。

But experts say it is no substitute for the world's largest economy, and second-largest emitter of carbon dioxide, turning its back on the fight.

然而，专家表示，这些行动还是无法取代界上的最大经济体和第二大二氧化碳放国对这场战斗的忽视。

As the world’s second largest emitter of greenhouse gases, the United States must lead the way in the global effort to fight climate change.

作为全界第二大温室气体放国，美国必须在全球抗击气候变暖努力中发挥领导作用。

ArcelorMittal, the world's biggest steelmaker and one of Europe's largest emitters, expects to invest an extra $10bn to cut carbon by 2030.

安赛乐米塔尔是全球最大的钢铁制造商和欧洲最大的碳放者之一，该公司预计将额外投资100亿美元用以在2030前减少碳放。

In theory, richer countries and bigger emitters of greenhouse gases will pay to assist the countries suffering from climate change the most.

从理论上讲，更富裕的国家和更大的温室气体放国将支付援助受气候变化影响最大的国家的费用。

As the world's largest greenhouse gas emitter, China plans to hit its carbon peak by 2030 and become carbon neutral by 2060.

作为界上最大的温室气体放国，中国计划到 2030 达到碳峰值，到 2060 达到碳中和。

Indonesia is the world's fifth-largest carbon emitter, and its economy depends on exporting coal and palm oil, two highly polluting industries.

印尼是界第五大碳放国，其经济依赖煤炭和棕榈油这两个高污染行业的产品出口。