落叶

地上本来就有许许多多落叶，他怎么能分清楚哪片是他摘下的叶子，只好将所有的落叶装进竹筐，背回家中。

There were many , many fallen leaves on the ground . How could he identify the leaf he had plucked ? So he had to put all the leaves into a bamboo basket and carry them home .

是有的，海丝特；不过只是在这些落叶之下！

Yes , Hester ; but only under the fallen leaves !

处理铁轨上的落叶对铁路公司而言是一个耗资巨大的工程。

Leaves on the line are an expensive problem for the railways .

绵羊边吃边走，穿行在厚厚的一层黄色落叶中间。

Sheep were munching their way through a yellow carpet of leaves .

我像风中的落叶一样浑身发抖。

I was shaking all over , trembling like a leaf

有些树已经开始落叶了。

Some of the trees were already beginning to shed their leaves .

我的院子里的落叶越来越厚。

The carpet of leaves in my yard became more and more noticeable .

花园里，七叶树已经落叶了。

In the garden , the leaves of the horse chestnut had already fallen

幸运的是，干清扫落叶这个活儿是值得的。

Fortunately , the chore of leaf sweeping is well worth the effort .

地上满是腐败的落叶。

The ground was scattered with decaying leaves .

落叶从她的窗前飘过。

Falling leaves drifted by her window .

树已落叶。

The tree has dropped its leaves .

我军以疾风扫落叶之势追击残敌。

Our army routed the enemy like a strong wind sweeping away dead leaves .

刮风的日子落叶积聚成堆。

Leaves collect in heaps on windy days .

落叶纷纷。

Leaves fell in profusion .

妈妈要汤姆打扫庭院里的落叶，可他却极力请求别叫他干这件事。

Mother told Tom to sweep away the dead leaves in the yard , but he tried to beg off .

我们来是为了像树一样落叶，

We came to lose our leaves like the trees ,

落叶树木在秋天落叶。

Deciduous trees shed their leaves in autumn .

树木开始落叶

The trees began shedding their leaves .

天气、野生动物和树木落叶并不总是在控制之中。

Weather , wild animals , and falling foliage11 from trees can 't always be controlled .

DNA分子标记在落叶果树上的应用

Application of DNA molecular marker in deciduous fruit tree

枯枝落叶分解释放CO2量同地表枯枝落叶量显著正相关。

CO 2 release rate of litter decomposition was positively correlated to the standing litter weight .

研究结果表明：落叶分解速率（落叶干重残留百分率和分解常数k）与矿质元素初始浓度之间没有明显的相关性。

No significant relationships were found between de-composition rate ( percentage dry mass remaining and decomposition constant k ) and initial element concentrations .

中国暖温带落叶阔叶林中某些树种的~（13）C自然丰度：δ~（13）C值及其生态学意义

~ ( 13 ) C at Natural Abundance Levels in the Broad-leaved Deciduous Forest in the Warm-temperate Region of China : Their δ ~ ( 13 ) C Values and Ecological Significance

野外枯落叶分解试验表明，仅连香树高N干扰对分解有促进作用，其它干扰效果不明显。

The decomposition experiment of withered leaves indicates : only high N disturbance could increase the decomposition of withered leaves of C. japonicum , the other disturbances were not significant .

常绿、落叶阔叶混交林分布在海拔500～800m的山谷；

Deciduous and evergreen broadleaved mixed forest distributed from 500m to 800m ;

重金属Pb元素在实验区群落叶和枝中的平均含量高于对照区，而干含量则和对照区相同；

Concentration of heavy metal Pb in leaf and branch in experimental community was higher than in contrast community , but it was the same in trunk .

地表枯枝落叶层直接排放CO2量的季节动态呈现逐渐递减的趋势，释放量平均为-0.87gC/（m2·d）。

CO 2 release rate of litter decomposition showed a declining trend with the average rate of -0.87 gC / ( m 2 · d ) .

增强UV-B辐射对暖温带落叶阔叶林下土庄绣线菊水分生理和氮素利用及形态特性的影响

Effects of Enhanced UV-B Radiation on Hydro-physiology , Nitrogen Use and Morphological Characteristics of Spiraea Pubescens in Warm-temperate Deciduous Broad-leaved Forest

全新世早期（12.0-9.0KaBP）高原东南部（104°-98°E）为落叶阔叶林/针阔叶混交林；

During the early Holocene ( 12.0-9.0 ka BP ), deciduous broad_leaved forest / conifer and broad_leaved deciduous mixed forest were distributed in the east of Plateau ( 104 ° - 98 ° E ) .