Carbon dioxide remains in the atmosphere for centuries, and even the most optimistic proposals for CO2 sequestration would take decades to have an effect.
二氧化碳在大气中可以存留数个世纪，即使是最乐观的提议封存CO2也会持续影响数十年之久。
They are cautiously optimistic because of the constructive atmosphere in which the talks will take place.
他们保持谨慎的乐观，因为会谈将在积极的气氛中举行。
The third Guangzhou College Tennis courses due to the impact site and teacher, intake rate is not optimistic, resulting in no strong cultural atmosphere on campus, tennis activities have not spread.
网球师资情况比较薄弱，其他们的技术与教学水平参差不齐，给网球的教学工作带来了极大的影响。
应用推荐