| 释义 |
threshold/ˈθreʃəʊld, ˈθreʃhəʊld/n. 1 a strip of wood or stone forming the bottom of a doorway and crossed in entering a house or room etc. 门槛，门口(形成门道底部、交叉于房子或房间等入口处的一段木头或石头) 2 a point of entry or beginning 入门；开端，开始 on the threshold of a new century 在新世纪的开端 3 Physiol. & Psychol. a limit below which a stimulus causes no reaction 【生理】【心】限，临界(刺激时没有任何反应的下限) pain threshold 疼痛临界点 4 Physics a limit below which no reaction occurs, esp. a minimum dose of radiation producing a specified effect 【物理学】阈，阈值(不出现任何反应的下限，尤指产生特定效果的最小辐射剂量) 5 (often 常作 attrib.) esp. Brit. a step in a scale of wages or taxation, usu. operative in specified conditions [尤英] (工资的)起始点；(税收的)起征点 [Old English therscold, threscold, etc., related to THRASH in the sense ‘tread’: origin of second element unknown] |