砍倒

But the most interesting about this remarkable plant is what people do with it after it is cut down.

有关这种奇异的植物的最有趣的事是在被砍倒后人们对它的利用。

I cut down a big tree,and then began to make a long hole in it.

我砍倒了一棵大树，然后开始掏成一个长条形洞。

I can down a big tree, and then began to make a long hole in it, I was hard work, but about six months later, I had a very fine canoe.

我砍倒了一棵大树，然后开始掏成一个长条形洞。这是很苦的工作，但六个月后我有了一支很好的独木舟。

I was in haste to buy it, before the proprietor finished getting out some rocks, cutting down the hollow apple trees, and grubbing up some young birches which had sprung up in the pasture, or, in short, had made any more of his improvements.

我忙着去买下它，当农场主搬完那些岩石，砍倒空洞的果树，挖出牧场上春天钻出的白杨树幼苗，简而言之，就在他改良完这片土地之前我就想把它买下来。

The trees are felled down one after another.

那些树一棵一课被砍倒了。

A straight tree always is the first one to be felled down.

树干笔直的树，总是第一个被砍倒。

It was not without infinite labour that I felled this tree.

我费了九牛二虎之力才砍倒这棵树。不适合

He hewed down the great oak tree.

他把那棵大橡树砍倒。

The tree is too thick to be hewed.

这棵树太粗了，难以砍倒

We cut the tree down successfully, but had a lot of trouble levering the roots out as they were fixed firmly in the earth.

我们顺利地砍倒了树，但是撬掉树根却费了很大的劲，因为树根牢牢地长在地里。

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。