n.

1. 門檻[C]
   He had never crossed the threshold of a bar before.

   他過去從未進過酒吧的門。

2. 出發點，開端，起點[S]
   Scientists are on the threshold of a breakthrough in their treatment of that disease.

   科學家在治療那種疾病方面很快就要取得突破。

3. （稅的）起徵點[S]
   The tax threshold for a pensioner is $6,000.

   領退休金的人的納稅起點是六千美元。

4. 【生】【心】閾[C]
5. （薪資，價格的）起增點

n.

1. a strip of wood or stone forming the bottom of a doorway and crossed in entering a house or room.
2. a level or point at which something starts or ceases to happen or come into effect.
   ▸the level at which one starts to feel or react to something:

   a low pain threshold.