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nausea; feeling like throwing up; feeling sick
朝から吐気がして何も食べられない。
I've been nauseous since this morning and can't eat anything.
船に乗ると吐気がする体質なんです。
I have a constitution that makes me nauseous on boats.
薬の副作用で強い吐気が出ることがある。
Strong nausea can occur as a side effect of the medication.