invaluableKK [ˏɪnˋvæljəbəl] /ˌɪnˈvæljəbəl/发音形容词1无价的、极为宝贵的、价值无法估计的The museum holds an invaluable collection of ancient maps.这座博物馆收藏了一批无价的古代地图。2极有用的、帮助极大的Her advice was invaluable when I started my own business.我刚开始创业时,她的建议对我帮助极大。用这个字练口说→