Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos.许多林木树种都有颈卵器, 受精以后便产生许多原胚.She latched on to his arm, hooking her other arm around a tree.她拽住他的胳膊不放，另一只胳膊抱紧一棵树。The...
Consider supplements over and above this healthy diet.除了这种健康饮食之外，还应考虑各种补养品。We gave them two tons over and above the amount agreed to.除了洽定的数量,我们还多给了他们两吨.Expenditure on education has gone up by seven point eight per cent o...