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...
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...
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...
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....