Our son has just graduated from a tricycle to a proper bicycle.我们的儿子刚刚从骑三轮车过渡到骑普通自行车.A little boy rode by on a tricycle.一个小男孩骑着三轮车过去了。Large modern - day aircraft utilizes either bicycle or tricycle landing gears.大型的现代飞机不...
Defined daily does ( DDD ) and drug utilization index ( DUI ) for analgesicas an indicator of rational drug use.并用限定日剂量 ( DDD ) 和药物利用指数 ( DUI ) 为指标分析其使用情况.Defined daily dose ( DDD ) and drug utilization index ( DUI ) for...