Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.大孢子四分体为线形, 合点端功能大孢子发育成为蓼型胚囊.The chalazal megaspore of a linear tetrad develops into a polygonum type sac.四分体线行排列,合点端的大孢子发育为...
将煎蛋饼放在烤架下用文火烘烤，直到表面凝固。Place the omelette under a gentle grill until the top is set.打磨木头的表面，为刷清漆做准备。Rub the surface of the wood in preparation for the varnish.这颗恒星的表面温度估计在零下75摄氏度左右。The star's surface temperature is r...