劍橋詞典If a baby or small child is teething, their first teeth are growing , usually causing pain . 出牙，長(zhǎng)牙 My sister was up most of the night with her baby who's teething. 我姐姐大半夜沒(méi)睡，守著她那正長(zhǎng)新牙的小寶寶。 返回 teethe