热力学是很难教的一门课。Thermodynamics is a hard course to teach.学券会增加不平等,因为最难教的孩子将会被甩在后面.Vouchers would increase inequality because children who are hardest to teach would be left behind....
This can be counteracted only by very effective insulation.这只能用非常有效的绝缘来防止.The effect of his preaching was counteracted by the looseness of his behavior.他讲道的效果被他放荡的生活所抵消了.For the reason why optical activity of mesomer is ...