难

There must be a key subprocess that occurs the most difficultly.

一个过程的难易是由最难发生的子过程决定的。

Many people consider the timpani to be one of the hardest instruments to play, because playing the timpani involves pitch, rhythm and tone, thus it is difficult to control them.

许多人认为定音鼓是最难演奏的乐器，因为打定音鼓需要音高、音调和节拍，所以是很难掌控它们的。

Textile and dyeing Wastewater is one of industrial Wastewater to be treated most difficulty. Wastewater of dyeing industry has complicated constituents, and usually contains many kinds of dyes .It has deep tinct and strong toxicity, and it is difficult to decompose it .

印染工业废水是极难处理的工业废水之一，印染工业废水组分复杂，常含有多种染料，色度深，毒性强，难降解，pH值波动大，而且浓度高，水量大。

This is going to be much tou gher than I thought it would be.

山：哦，一定很难，很难做，比我想象的要难得多。

In the situation of trackless escape you can use the bathroom as a temporary provision.

在无路逃生的情况下，可利用卫生间等暂时辟难。在无路逃生的情况下，可利用卫生间等暂时辟难。

I learned for the first time that it's hard to give up life, just turn it loose.

这是我第一次学到放弃生命很难。放松生命很难。

Because such, tussah breed aquatics has nurse field looking for silkworm is difficult, difficult wait for a characteristic.

正因为如此，柞蚕养殖有看护难、找蚕场难等特征。

I think that she's really undefinable; I know that sounds quite - like an odd thing to say, but it's very hard to figure out what she was

我认为对于她真的很难下定义；我知道那听上去相当-说出来会很奇怪，但是很难搞清楚她是什么

The results show:during the producing of water glass,the new technology can get rid of metal impurties which have been formed undissolved compounds;the undissolved compound can dissolved in acid;the purity of water glass producing by new technology is as same as or higher than the purity of it wthich is produced by the tradional technology sometimes.

结果表明：金属成分在水玻璃的制备过程中以难溶化合物的形式被除去；难溶化合物能与酸反应，转化为可溶化合物；新技术制取的水玻璃溶液与传统方法相比，纯度相同，甚至更高。

Their economy is difficult to manage, many of their units are powerful but unforgiving if you make a mistake with them.

他们的经济很难掌控，很多他们的单位很强大，但对于你的错误却很难包容。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。