ahead of
used to indicate that an event or action occurs before a specified time or deadline

미리, 앞서

[전치사]
beyond
used to indicate a point or period of time that is past or later than a specific reference point

이후에, 그 시점 이후

[전치사]
in
used before a specific period of time to show when or at what time something happens or how long it takes for it to happen

에, 안에

[전치사]

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