air quotes
noun [ plural ] uk/ˈeə ˌkwəʊts/ us/ˈer ˌkwoʊts/
说话者用手指在空气中划出的引号（用以表示自己正以不寻常的方式使用某词或某短语，或表示自己在重复他人的话）
imaginary quotation marks that you make in the air with your fingers, to show that you are using a word or phrase in an unusual way or repeating exactly what someone has said