his dual role as composer and conductor他兼任作曲家和指挥的双重角色He has dual role as composer and conductor.他兼作曲家及指挥的双重身分.The airplane had dual controls.这架飞机有两套操纵装置....
She sold trinkets to tourists.她向游客出售廉价饰品。He bought her trinkets and took her to the theatre.他给她买了些廉价首饰,并带她上戏院.He bought her trinkets and took her to the theater.他给她购买小装饰品并带她去看戏....
含矿岩系为双峰岩石组合,具火山碎屑岩-矿体 - 喷气岩“三位一体”特征.The ore - a bimodal rock association and exhibit assembly characteristics of pyroclastic rock, orebody and exhalite....