| 单词 | great-blue-lead |
| 释义 | > as lemmasgreat-blue-lead b. Gold-mining. An alluvial deposit of gold along the bed of an ancient river. Also deep-lead, great-blue-lead (see quots.). ΘΚΠ the world > the earth > minerals > mineral deposits > [noun] > of alluvial gold pocket1848 poor man's diggings1852 lead1855 1855 Argus (Melbourne) 19 Jan. 6/1 A great curiosity was discovered in a hole on this lead—a tree. 1874 R. W. Raymond Statistics Mines & Mining 16 The term ‘great blue-lead’ is employed by the miners to distinguish those portions of the alluvium which are found to rest in a well-defined channel. 1880 L. Fison & A. W. Howitt Kamilaroi & Kurnai 272 (note) The expression ‘deep lead’ refers to those ancient river-courses which are now only disclosed by deep-mining operations. 1888 F. Hume Madame Midas i. i. 20 Who..knew..where the richest leads had been in the old days. < as lemmas |
| 随便看 |
英语词典包含1132095条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。