钻探 zuāntàn exploratory drilling Definitions Defs Origin Strokes Stroke Words Sentences Sents 1 sentence 地质学家正在这个地区进行钻探。 dìzhìxuéjiā zhèngzài zhègè dìqū jìnxíng zuāntàn. Geologists are conducting drilling exploration in this area. Source: Dong Chinese Dictionary