prematureadj.提前的；过早的；早产的n.早产儿；早熟premature removal提前拆修premature grazing早熟牧草premature systole期前收缩,过早收缩premature puberty早熟青春期premature control参数控制premature neonate早产新生儿premature release预先释放premature seeding早期结实premature contact早接触Premature infancy早产的婴儿期