某些植物的珠被和珠心细胞形成完全正常的胚.The cells of the integument and nucellus of some plants form perfectly normal embryos.大多数被子植物的胚珠有两层珠被, 而裸子植物通常只有一层.Most angiosperm ovules possess two integuments, while gymnosperms usually have only ...
一些人认为是棉黄萎病为其病因.Some considered diseases such as Verticillium wilt the culprit.棉花黄萎病(CottonVerticillium Wilt) 是棉花生长过程中最具毁灭性的病害之一.Cotton verticillium wilt is one of the most crushing disease to cotton.怎样根据当地病害发生程度,提出棉花枯萎病和...
把这首诗复写两份.Make two copies of this poem.你把这收据上面的原件收下, 我们保留下面的复写件.You receive the top copy of the receipt, and we keep the carbon.她打完了几封信后, 到文书柜把几份复写的信件去存档.When she had typed several letters, she went to a filing cabinet an...
Mom is a fulltime homemaker, and teaches Darli and I.养母是位全职的家庭主妇.Eventually assumes a fulltime teaching post at Pinkerton Academy.最终在平克尔屯学院获取全职教席.And then suddenly it's become fulltime ------ and we got a deal.然后,突然...