threshold

英 ['θre???ld; 'θre?,h??ld] 美['θr??hold]
  • n. 入口；門(mén)檻；開(kāi)始；極限；臨界值

英英釋意

1. the starting point for a new state or experience;
"on the threshold of manhood"
2. the smallest detectable sensation
3. the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close;
"he stuck his head in the doorway"
4. the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offer support when passing through a doorway
5. a region marking a boundary