a strip of wood or stone forming the bottom of a doorway and crossed in entering a house or room
门槛;门口。
[in sing.]a point of entry or beginning
入门;开端;开始
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she was on the threshold of a dazzling career .她正要开始灿烂的职业前程。
the beginning of an airport runway on which an aircraft is attempting to land
机场跑道入口;跑道头。
the magnitude or intensity that must be exceeded for a certain reaction, phenomenon, result, or condition to occur or be manifested
临界点,阈值。
the maximum level of radiation or a concentration of a substance considered to be acceptable or safe
(物质辐射或浓度的)安全阈值。
【生 理,心理】 阈,限,界限,临界
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everyone has a different pain threshold .每个人的痛觉阈不同。
〈主英〉 起始点;(税的)起征点
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the VAT threshold .增值税起征点。
"Old English