In other words, when the marginal cost of oil consumption is more than twice the average.

换句话说，当边际成本的石油消费是平均数的两倍以上。

youdao

In other words, marginal tax rates are just one factor in an options exercise strategy.

FORBES: Goolsbee: Execs Rush To Exercise Options Before Tax Rates Rise

Partly because the language is already so rich, the "marginal utility" of new words is declining: Existing things are already well described.

WSJ: Culturomics Looks at the Birth and Death of Words

In other words, I believe that marginal tax rate cuts work to stimulate the economy, but, in most cases, probably not enough completely to pay for themselves.

FORBES: The Economy Glass Getting Half Full