After drilling for several weeks they finally struck oil.

在钻探了几个星期后, 他们终于发现了油矿。

It's a mean of geotechnical investigation, including borehole surveying, costeaning, trenching exploration, test pitting, hole exploration, geophysical exploration and penetration sounding.

岩土工程勘察的一种手段，包括钻探、井探、槽探、坑探、洞探以及物探、触探。

It is the reason why the wildcatter, the independent oilman whose test drillings might come up dry 20 times before gushing in the end, is an enduring Texas symbol.

是为什么在投机，个体石油在石油喷发前可能要试钻探多达二十次的原因，也是德州一直以来的标志。