knock on wood片語KK [nɑk ɑn wʊd] /nɑk ɑn wʊd/發音片語1老天保佑、但願如此、希望別出事口語,多為美式The car has never broken down on me, knock on wood.這輛車從沒在我手上壞過,老天保佑。2敲木頭字面義She knocked on wood after saying she had never been sick.她說自己從沒生過病,說完就敲了敲木頭。