经济学人下载:电子游戏如何打破监管困境?(2)

1.marginal cost 边际成本（经济学专有名词）：边际成本是指厂商每增加一单位产量所增加的成本。因为固定成本几乎沉没，理论上边际成本可以使企业无损失的继续运转。
2.strive to 努力
He strives hard to keep himself very fit.
他努力使自己保持非常的健康。
3.tweak something 稍稍改进(如系统或设计)
He expects the system to get even better as the engineers tweak its performance.
他期望在工程师对该系统的性能稍加改进后，它会运行得更为良好。
4.placate someone 安抚
He smiled, and made a gesture intended to placate me.
他微笑了一下，做了一个意在安抚我的手势。
5.in the interests of 为了…的利益
a call for all businessmen to work together in the interests of national stability.
为了国家稳定而向所有商人发出的共同合作的号召。