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ordinary; common; usual
free of charge
unaffected; as is; safe
only; merely; just; simply
but; however; nevertheless
「常」 has other readings with different meanings.
彼女は常に笑顔を絶やさないよね。
She always keeps a smile.
常識があれば分かることだと思う。
I think anyone with common sense would know.
非常識な行動は慎むべきだよね。
You should refrain from thoughtless behavior.