threshold /ˈθreʃhəuld/ n. ［c］ 1. 门槛，门口：cross the threshold 跨过门槛 2.入门，开端at/on the threshold of… 在…的开始；即将开始：［考句］As one of the youngest professors in the university, Miss King is certainly on the threshold of brilliant career. 作为大学最年轻的教授之一，金小姐的事业刚刚开始。 3.起始点，限，临界： cross the threshold of practical life 步入实际生活之门