慢速英语:U.S. and Arab Allies Bomb Militant Targets in Syria

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短语讲解：

1. President Obama and other world leaders are calling for a new international agreement to protect the Earth from dangerous greenhouse gases.

protect from 保护，保卫
例句： Wild wood should be well protect from excessive hag. 
野生森林应该被保护以免过量砍伐。  
 
2. He called for the world's nations to find a "new course" to protect the environment from carbon releases.

call for 需要
例句：Different circumstances call for different tactics. 
不同的情势需要不同的策略。  
 
3. It said 73 national and 22 local governments, along with about 1,000 companies, are involved in the project.

along with 和…一起[一道]，随着; 除…以外（还）; 以及;
例句：I'll go along with you. 
我将随同你一起去。 

4. They are based on a model that shows cases will double every few weeks in Liberia and Sierra Leone.

base on 使建立在…基础上
例句：Service-oriented government should base on a scientific and rational administrative system.
服务型政府必须建立在科学合理的行政管理体制的基础上。