refresher

/ɹɪˈfɹɛʃɚ/ 名词 C2

中文：提神物、复习

Something that refreshes. · The nap was a welcome refresher.
A review to refresh or renew knowledge. · They recommend a refresher class every few years.
A fee paid to counsel to continue with a case, especially one that was adjourned.
An equity grant given by a company to an existing employee, as opposed to an initial grant given to new employees.

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