pioneer /ˌpaiəˈniə/ I. n.［c］开拓者，先驱者：young pioneers少先队员；early pioneers in Chinese education中国教育界的先驱  ‖II. vt.拓荒，倡导，开辟：They will pioneer a new route to the coast.他们将开辟一条到达海岸的新路线。The old doctor pioneered the use of drug.这位老医生倡导使用那种药物。