4个胚珠同时分泌授粉滴,花粉掉落后被授粉滴带进珠孔.Pollination drops were exuded from 4 ovules at one time.开花当天助细胞珠孔端的丝状器中聚集了大量的钙颗粒.Near anthesis, synergids formed filiform apparatus in which abundant calcium precipitates accumulated pollen tube...
A couple of plain-clothes men had been sniffing round his apartment.几名便衣男子一直在他的公寓周边打探。officers in plain clothes便衣警察plain-clothes detectives from the vice squad取缔性或毒品犯罪行动队的便衣侦探...