Grease traps shall be regularly maintained and cleaned out to ensure their effectiveness.

应定期维护和清理集油器以确保其有效性。

youdao

Also eating away at your cash: garbage service, the sign out front, having someone clean the grease traps, printing menus--and the temptation to eat or drink up the profits yourself.

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And grease traps must have an inspector, also fine.

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