Lookback options are exotic options with path dependence.

回溯期权是一种具有路径依赖的奇异期权。

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Lookback is a term now widely used in blood banking circles.

回溯是现在在血库界广泛使用的术语。

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As part of the regulatory lookback, we are also taking a look at regulations imposed on state and local governments.

WHITEHOUSE: A Smarter Approach to Regulation

For a successful OVDP applicant, such penalty is 27.5% of the largest balance in the previously undisclosed foreign accounts during the eight-year lookback period.

FORBES: Representation Before the IRS