种间杂交的主要障碍是F1代的不育性.A major barrier to interspecific hybridization is sterility in the F 1 progeny.因此,向日葵细胞质雄性不育性的研究备受关注.That is why cytoplasmic male sterility ( CMS ) in sunflower is the research focus through years....
Brodie cuffed him on the side of the head.布罗迪拍了一下他的头。Brodie put out his tongue at her.布罗迪朝她做了个鬼脸.An unidentified man did a brodie last night.一名姓名不详的男子昨晚跳河自杀....
树上的绿叶闪闪发光,有节奏地快乐地摇摆着.Broad leaves shone and swung gayly in rhyme.自从离婚后我真正地快乐 ─ 再一次自由自在且无拘无束的!Since my divorce I've been really happy - footloose and fancy - free again!唱, 大家一起唱, 快乐地快乐地唱.Sing, sing together, merrily ...