砍伐

But the good Qin does not come from the common wood of the phoenix trees and catalpas , but from the wood of over one hundred years old.

但一般的桐木和梓木是做不了好琴的，须用砍伐百年以上的木材。

The pollard willows were tortured out of their natural shape by incessant choppings.

那一丛秃头的柳树，因不断遭受砍伐都失去了天然的形状。

It's been in the works since 2006 and for more than two years, thousands of workers have been clearing trees, moving soil, building greens, fairways, clubhouses and luxury hotels.

项目于2006年开工，两年多来，数千名工人一直在砍伐树木、搬运泥土、修建草坪、高尔夫球道、俱乐部会所和豪华酒店。

In the sixteen hundreds Haiti's French colonizers cleared forests to plant sugar cane.

在17世纪的海地，法国殖民者砍伐森林以种植甘蔗。

The very cypresses rejoice over you, and the cedars of Lebanon:＂ Now that you are laid to rest, there will be none to cut us down.

连松树和黎巴嫩的香柏也都因你而喜庆：＂自从你仆倒后，再没有谁上我们这里来砍伐！

Ecologists constantly call for people to stop cutting trees for the sake of man's own future.

生态学者一直不停地呼吁人们为了人类自己的未来停止砍伐树木。

We've simply had anough of these fellers, if we don't draw a line under their wheeling and dealing, they will continue forever.

我们只是有点受够了这些樵夫，如果我们不划出底线，他们似乎将永远继续砍伐下去。

It's estimated that direct emissions from meat production including clearing forested land, making and transporting fertilizer, accounts for about 18% of the world's total greenhouse gas emissions.

据估计，肉品生产包括森林砍伐、饲料制造与运输等造成的温室气体排放，约占全球总量18%。

Other pathways of nutrient loss include fire, the harvesting of crops and deforestation.

营养物损失的其他途径包括火灾，庄稼的收获和森林砍伐。

Environmental threats to the plantation area are illegal harvest, fire and plant diseases and insect

的环境威胁来自于非法砍伐，火灾，植物灾害和病虫害。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。