Prime Minister Manmohan Singh pledged Sunday that his government will work for a positive outcome at next month's crucial United Nations summit on setting targets for carbon emissions.

VOA: standard.2009.11.08

And we're going to have q2 prime, and we're going to draw the arrows in the positive direction in these cases.

还有q2一撇，在这个例子中,我们把箭头朝正方向。

麻省理工公开课 - 热力学与动力学课程节选

President Obama denied the charge. The summit host,Trinidad and Tobago Prime Minister Patrick Manning, praised President Obama for a positive attitude, which he said set a congenial tone that ensured success at the gathering.

VOA: standard.2009.04.19