Mr Obama's plan to curb carbon dioxide (CO2) emissions (排放), though necessary, will be far from cost-free, whatever his sunny speeches on the subject might suggest.
出自-2013年6月阅读原文
Informative speeches can save lives.
出自-2010年12月听力原文
柯林斯高阶英汉双解学习词典释义
N-UNCOUNT
说话能力;说话;言语
Speech is the ability to speak or the act of speaking.