A heavy stockade around the cabin protected the pioneer from attack.小屋周围的厚厚的栅栏保护拓荒者免受攻击。Sun Li is an explorer , a pioneer an expresser of the new territory of literature.孙犁是文学新地的发现者、抒写者、开拓者.Two members of the Young Pione...
She was a suffragette and a birth control pioneer.她参加争取妇女选举权的运动,也是节育倡导者。a pioneer in the field of microsurgery显微外科领域的创始人He is a pioneer in modern medical practice.他是现代医学实践的先驱....