杂草中危害通常仅限于叶脉间的条状区域.On grasses, injury is usually confined to areas between the veins.叶脉有两种:平行脉和网状脉.There are two kinds of venation , parallel and net.叶脉中木质部比重越大,越有利于水分的传输.Large proportion of xylem benefit to the water tr...
Three hundred thousand tons of cereals are needed to replenish stocks.需要30万吨谷类补充库存。They replenish the Xiakangjian flora and verify that this flora belongs to the Cathaysia - Gondwana mixed flora.等植物化石,进一步完善了夏康坚植物群的组合面貌,证...
The clauses have different relations which are often denoted by correlatives.各分句之间可以有各种不同的关系,常用关联词表示.The union of two sets A and B is denoted by AUB.两个集合A和B的并,用AUB表示.In the Middle Ages the term "drab" denoted a very simp...
You'll hit on exactly the most efficient method of revenging yourself on me.你正好找到了你对我报仇的最好方法.They pant for an opportunity of revenging that humiliation.他们伺机为自己受到的羞辱报仇....