The children are up to mischief.

I hope that the children are not up to mischief.

但愿孩子们不是在胡闹.

That knock sounded to me as if someone was up to mischief.

这种敲门有点来意不善.

North Korea's long-range missile launch that month was seen also asa precursor to another atomic detonation.

当月的朝鲜远程导弹发射也被视为是再一次核试验的前奏.

But Washington, Tokyo and Seoul believe it could be a disguised test a long-range missile system.

然而华盛顿 、 东京以及韩国方面均认为这是远程导弹系统实验的伪装.

They launched a long-range missile on the enemy.

他们向敌军发射了一枚远程导弹.

The working principle of CM 250 cold-shearing mill in bars production line at Xingang is introduced.

介绍了新钢棒材线CM250冷剪机工作原理,及其辅助装置的配置完善,改进措施.

This article describes two auxiliary devices that could increase the repeatability of an injection moulding machine.

这篇文章会介绍两种辅助装置,他们可以增强注射机的重现性.

Mechanical circulation assist device is effective to curing severe heart failure.

机械循环辅助装置对于挽救严重心功能衰竭患者是有效的.

Reduce the friction and eliminate the need of lubricant.

减少使用步靴及针送车等防皱车种和拖拉辅助装置的需要.

It was the transitional period between the Middle Ages and modern times.

它是中世纪和现代之间的变迁过渡时期.

Until modern times, a trip was often a long and difficult adventure.

直到近代, 旅行还常常是个漫长而又艰难的历险.

We shall see how science progressed into modern times, often in spite of dispute and disbelief.

我们将会看到科学如何冲破一切怀疑和偏见而进入现代.

Unemployment is one of the major problems of modern times.

失业问题是现代的主要问题.

He was regarded as the most successful Chancellor of modern times.

他被认为是现代最成功的财政大臣。

The army's level of modernization in weapons has improved significantly.

武器装备现代化水平显著提高.

The chemical modification can enhance bioactivities of natural polysaccharides, and even give new bioactivities.

通过化学修饰可以显著提高多糖的生物活性, 甚至赋予新的生物活性.

A type casting adhesive based on PVA as mian material has been prepared by chemical modification.

以聚乙烯醇为主要原料,采用化学改性的方法成功制备了A型铸造粘合剂.

The advancement in the research of chitin and chitosan's chemical modification is generalized.

介绍了甲壳素和壳聚糖化学改性的研究进展.

The chemical modification techniques of natural phospholipids and characteristics of products were reviewed in this paper.

介绍了天然磷脂的化学改性方法及其改性物的性能特点.

Chemical modification is one of the most universal methods.

化学法改性是常用的方法.