新概念英语单词Ⅳ Lesson 13

block and tackle 滑轮组

boring 钻孔

circulate 注入，环流

coring bit 取芯钻头

cutting bit 钻头

cylinder 圆柱体

derrick 井架

drill pipe 钻杆

every so often 时常

geologist 地质学家

gusher 喷油井

mineral 矿物的

rotate 使转动

search 搜查

strata 岩层（复数）