Microshoots of Castanea mollissima cv. yanshanhong in vitro acquired an enhanced rooting capability with increasing numb......

Slang is an important language form and plays an essential role in daily life.American slang shows its national characte......

礼貌是人们在交际活动中为达到交际目的,促成交际顺利进行而采取的一种交际手段.作为一种现象,它具有社会普遍性.由于存在医学语境......