原始回报，初始回报

。。。。

Raw return is the pure retuen on the actual investment, disregarding any further gain (or loss) you may make due to outside factors.For example if you had sterling and you bought gold you could either calculate the raw return or add in any gain from the currency. If trading oil, again you could take purchase price to selling price as raw profit. But if you were rolling over the monthly oil future (as you probably would be) you may make an additional profit (or loss) on the actual rolling process (selling cash and buying the next future).

英文很强大啊。