Threshold
01
门槛, 门坎
the horizontal part at the base of a door frame that you step over when entering or exiting a room
02
门槛, 入口
the floor or ground of an entrance to a house, room, or any other building
03
门槛, 界限
the starting point for a new state or experience
04
阈值, 界限
the smallest detectable sensation
05
门槛, 边界
a region marking a boundary
