英语翻译Leaves are usually green.If you see a grass leaf you kno

英语翻译
Leaves are usually green.If you see a grass leaf you know that it comes form a grass plant.You know what an oak leaf looks like.You know a clover leaf when you see one.All the leaves that grow on a certain type of plant have the same sort of shape.If you look at a leaf you will see that it is often thin and flat.The edge of the leaf may smooth or may be toothed like a saw.The edge of the oak leaf is toothed,but the teeth are large and blunt.Leaves like the oak and the apple are called simple leaves.The strawberry and clover leaves are so deeply cut that each leaf looks as if it is three leaves.These leaves are called compound leaves.The part of the leaf is called leaflets.There is only a bud at the base of the leaf stalk.All leaves have a bud in the axil where they join the stem.
Running down the center of each is a think ridge.This is smaller vein.These smaller vein may branch again to form even smaller vein.Vein are harder than the rest of leaf blade and they form the skeleton of the leaf.The carry food and water between the leaf and stem.When the leaf falls of the plant,the thin blade will rot quickly,but the vein will often survive for a longer time.you may find leaf skeletons under hedges.

叶子通常是绿的.你看见一片草叶你就可以知道它来自一根草.你知道橡树叶子的样子,当你看见三叶草是你可以认出它来.所有的叶子都有自己特定的样子,同种植物有一样的叶子.如果你看着一片叶子你可以知道它是圆的还是平的.叶子的边缘可以是光滑的,也可以是锯齿状的.橡树叶的边缘是锯齿状的,但是是非常宽切圆滑的那种锯齿.橡树叶或是苹果叶都叫做单叶,草莓或三叶草叶有很深的切口好像有三片叶子一样,这种的叶子称为复叶.这种叶子的每一部分叫做leaflets（复叶的一片）,只有一朵花苞在茎上.所有的叶子都有花苞在叶腋上,叶腋就是茎与茎之间的交接处.
沿着每一个中心下去是一个脊,这是一个更小的叶脉.这些小叶脉可能长出又一个更小的枝桠来.枝桠比叶片更硬,它们形成叶子的骨架.营养物质和水分在枝桠和叶子间流通.当落叶时,薄薄的叶子会快速腐烂,但枝桠会活更长时间.这时你可以看见植物的骨架了.



翻的我心都累了.过了时间了吧.哎.