threshold

1. N-COUNT The threshold of a building or room is the floor in the doorway, or the doorway itself. 門口

He stopped at the threshold of the bedroom. 他在臥室門口停了下來。

2. N-COUNT A threshold is an amount, level, or limit on a scale. When the threshold is reached, something else happens or changes. 界限; 臨界點

Moss has a high threshold for pain and a history of fast healing. 莫斯的忍痛力很強，而且有迅速瘉郃的經歷。

3. PHRASE If you are on the threshold of something exciting or new, you are about to experience it. 即將經歷

We are on the threshold of a new era in astronomy. 我們將邁入天文學的新時代。