除草

A well-tended garden therefore has to be weeded regularly so that the weeds do not gain the upper hand.

一个修剪妥当的园子，当然会定期除草，不让莠子长过头。

N5A airplane has the layout of single engine, single pilot, low wing and fixed tricycle landing gears, and it is powered by an American Lycoming I0-720-D1B type 400HP piston engine and an American Hartzell constant three-blade metal propeller.

其中N5A型飞机采取单发动机、单驾驶、下单翼、固定式前三点起落架布局，可进行播种、施肥、除草、森林防火以及农林业病虫防治，经过简单改装后还可进行地质探测、空运、空中摄影、航空体育训练和航空旅游等作业，具有使用成本低、适用范围广、作业能力强、操作性好、安全性高的特点。

Beause the uses of sisal hemp fiber can be substituted by the synthetic products, the cultivation and price of sisal hemp are greatly reduced. In addition, the widespread of different weeds in sisal hemp field also influences the growth of sisal hemp plants. Therefore, the total production of this crop becomes insufficient for the requirements of domestic demand.

自从人造他纤维发明和取代部份之植物纤维用途后，琼麻纤维之价格一落千丈，农民因无利可图，未能加往年再雇工除草，於是麻园里杂草丛生，威胁看琼麻生长，遭致麻丝产量逐年降低，而不能充分供应国内需要。

The effect of pendimethlin on cell mitosis of maize seedling advantitious root tip was studied inthis paper.

本文研究了除草通对玉米幼苗初生不定根根尖细胞有丝分裂的影响。

They spring up in lawns are not affected by by lawnmowers.

它们生长在没有除草机除过的草地上。

Australian scientists found that some fish act as "lawnmowers", keeping coral free of kelp and unwanted algae.

澳洲的科学家们发现一些鱼类著实扮演了&除草机&的角色，使珊瑚礁得以避开巨藻以及多余海藻的纠缠。

How many a poor immortal soul have I met well-nigh crushed and smothered under its load, creeping down the road of life, pushing before it a barn seventy-five feet by forty, its Augean stables never cleansed, and one hundred acres of land, tillage, mowing, pasture, and woodlot!

我曾遇到过多少个可怜的、不朽的灵魂啊，在生活的重负之下几乎被压死，他们无法呼吸，他们在生命道上爬行，推动他们前面的一个七十五英尺长，四十英尺宽的大谷仓，肮脏的住所从未打扫过，上百英亩土地要耕耘，除草，还要放牧和护林！

The structures were studied by IR and NMR. The absorption frequencies of the carbonyl group markedly depended on the coordination no. of the tin atom. The chem. shifts of 119Sn and 13C and the 1J(119Sn-13Sn) coupling constants of the compounds were determine Small structural changes around the tin atom were reflected in the 119Sn chem. shifts. For tributyltin arylcarboxylates, a relationship between 119Sn chem. shifts and Hammett constants of the para-substituents was found. The biol. activities of same compounds have been studied. They may be used as fungicides for fruit.

通过对它们的红外光谱、核磁共振谱(^1^3C， ^1^1^9Sn)的研究，表明羰基红外吸收频率与锡原子的配位数有密切关系，同样分子上的微小变化明显地表现在δ119Sn上，对位取代基苯甲酸酯的δ119Sn与苯环上取代基的Hammett常数之间存在良好的线性关系：δ119Sn=19.11σ+110.612 n=7，γ=0.9955着重研究了部分化合物在经济作物上的抗病原菌能力，结果表明，这是一类具有广谱性的有机锡化合物，抗菌活性优于对比药剂朴海因，接近或相当于多菌灵，它们同时具有较强的除草活性。

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。