These might include the difference in returns between small-cap and large-cap stocks (fund managers tend to favour the former) or the levelof credit spreads and so on.
大盘股同小盘股的回报差(基金经理比较喜欢前者)、息差水平等都是研究对象。
3
At Shell, our preference is for cap-and-trade systems that place a cap on the overall levelof emissions permitted.
在壳牌，我们倾向于上限和交易(cap - and - trade)系统来为总的排放水平确定一个上限。