除草

The results showed that pendimethalin is a herbicide interfering cell division,The mito-sis of pendimethalin treated root was arrested at metaphase with contracted and condensed chromo-somes and produced a series of abnormal,polymorphic cells such as multinucleate,multinucleolus,micronucleus and polyploid cells.

结果表明，除草通是一种影响细胞有丝分裂的除草剂，其作用方式在于阻止分生组织细胞从前期向中、后、末期的过渡，引起染色体凝集、短缩以及多核、多核仁等一系列畸形与异常变化。

Macrocidin A is a macrocyclic tetramic acid with herbicidal activity that isolated from the culture of Phoma macrostoma.In the second chapter of this thesis, our synthetic studies to macrocidin A were discussed.

Macrocidin A是加拿大化学家Graupner从Phoma macrostoma培养液中的代谢物分离得到环状乙酰型Tetramic acid天然产物，研究表明这类新的Tetramic acid化合物具有很强的除草活性。

The biological tests indicate that most of the compounds synthesized have herbicidal activity in a certain degree and several compounds show certain bactericidal activity. Further anti-ALS enzyme test shows that two kinds of novel phosphonic ureas have good anti-ALS enzyme activity.

对合成的部分化合物进行了初步的生物活性测定，所设计的大部分化合物都显示出一定的除草活性，有的具有一定的杀菌活性；对两类膦酰脲化合物进行了离体ALS酶抑制试验，结果表明它们是很好的ALS酶抑制剂，同磺酰脲相当，有希望作为另一类ALS酶抑制剂的先导化合物。

We studyed on breaking dormant and screening preferent chemical herbicides of Codonposis Lanceolata Bentn.et Hook.f. in order to solve the low rate of germination and difficulty of weed control during the cultivation of Codonposis Lanceolata Bentn.et Hook.f..

为解决轮叶党参栽培过程中种子出苗率低及除草难的问题，对轮叶党参休眠的打破及适宜化学除草剂的筛选进行了探讨。

It means making more calls, going more miles, puling more weeds, getting up earlier in the day and always being on the lookout for a better way of doing what you're doing.

它意味着多打几个电话、多走几里路、多除草、早起床，意味着总是寻求更好的方式去做你在做的事情。

One lawnmower could easily be used to cut the grass of 10 small turfed gardens.

一部除草机能够用来轻易地清除10个小型花园的杂草。

In order to search for new types of highly active and low toxic pesticides, we considered alternaric acid as a lead compound and considered 5, 6-dihydro-2H-pyran2, 4-diones as a patent structure, designed and synthesized seven series of 5, 6-dihydro2H-pyran-2, 4-diones derivatives, tested their fungicidal, herbicidal and tobacco virucidal activities.

为了寻找高效低毒的农药品种，以交链孢酸为先导化合物，以5，6-二氢-6-烷基-2H-吡喃-2，4-二酮的结构为母体结构，设计并合成了七个系列的2，4-吡喃二酮化合物，用〓H NMR、〓C NMR、质谱和元素分析证明了其结构，并测试了部分化合物的杀菌、除草和抗烟叶病毒的活性。

I've weeded and hoed and picked cotton until I can't stand it another minute.

我曾经除草采棉直到我无法忍受为止

I've weeded and hoed and picked cotton until I can't stand it another minute.

我除草，耕地，采棉直到我再也无法忍受一分钟为止。

It is a bitter assignment to weed in the courtyard, no matter digs the vine or wipes out dandelion, Wanting to defeat God's cursing in Garden of Eden, it indeed besets with difficulties.

在院中除草是件苦差事，不管是挖藤蔓或是拔除蒲公英，想要战胜上帝在伊甸园中所下的咒诅，的确困难重重（见创世记3章17－18节）。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。