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to live; to exist
to make a living; to subsist
to be in effect; to be in use; to function
to come to life; to be enlivened
to be safe (in baseball, go, etc.)
その経験は必ず将来に活きる。
That experience will surely prove valuable in the future.
経験が今の仕事に活きている。
My experience is being put to use in my current job.
長年の努力が本番で活きた。
Years of effort paid off in the real performance.