喜庆的彩纸已经挂在天花板上。Festive paper decorations had been hung from the ceiling.微笑、点头和喜洋洋的脸庞使喜庆的气氛变得更浓了。Smiles, nods, and cheerful faces added to the general gaiety.在喜庆的背后存在着隐忧。Beneath the festive mood there is an underlying appr...
通过雌株末梢的纵切面所现出的几个瓶 状 的颈卵器, 这就是雌性生殖器官.A similar section through the female plant reveals several bottle - shape archegonia , the female reproductory organs.他们或者由雄株和雌株组成, 或者由雌株和两性个体 ( 雌金异株 ) 组成.They consist either male and ...