In a speech at Carnegie Mellon University, President Obama referred to the Gulf oil spill in making the case that it is time, as he put it, to "aggressively accelerate the nation's transition to a clean energy economy."
VOA: standard.2010.06.14
The "is it okay" question is very useful at making your speech a little less casual.
is it okay”问句可以用来让你的对话变得随意一点。
The "is it okay" question is very useful at making your speech a little less casual.
is it okay”问句可以用来让你的对话变得随意一点。
应用推荐