The marsh been drained off to provide new building sites.

He has worked as a labourer in factories and on building sites.

他在工厂和建筑工地干过苦工。

The heat had to be dissipated by elaborate cooling systems.

热得用复杂的冷却装置散发.

This is a progressive firm that uses the most modern systems.

这是一家使用非常现代化系统的先进企业.

the increasing complexity of modern telecommunication systems

日益复杂的现代电信系统

Introduction of electronic point-of-sale systems is improving efficiency.

引进销售点电子系统提高了效率。

In 1987, Garcia introduced legislation to nationalize Peru's banking and financial systems.

1987年，加西亚立法将秘鲁银行业和金融系统收归国有。

The guidance systems didn't work and the missile couldn't hit its target.

导航系统失灵，导弹未能命中目标。

Emergency cooling systems could fail and a reactor meltdown could occur.

紧急冷却系统有可能失灵，核反应堆有可能发生堆芯熔毁。

Computer security systems will be designed by independent technicians.

计算机安全系统将由独立的技师来设计。

Honeybees use one of the most sophisticated communication systems of any insect.

蜜蜂之间所用的交流方式是昆虫中最为复杂的方式之一。

Biological systems have been doing this for billions of years.

生物系统亿万年来一直都是这样。

Operating systems can be brought to a halt by a Trojan Horse.

操作系统可能会因为木马病毒的攻击而中止。

During the 1980s the world's financial systems became more open.

在20世纪80年代，世界金融体系变得更加开放。

Archaeologists have discovered ancient bronze swords and other weapons, made by casting in this manner.

考古学家已经发现了这样铸成的古代青铜剑和其它兵器.

Archaeologists have uncovered some ancient earthwork.

考古学家发现了一些古代的土建工程.

Archaeologists dated the fossil after much study.

经过认真地研究后,考古学家们最后确定了该化石的年代.

The archaeologists excavated an ancient city.

考古学家挖掘出一座古城遗址.

The sheer volume of tablets that the archaeologists have uncovered is overwhelming.

考古学家们发现的泥板单就数量而论就很可观.

This has never been found by archaeologists.

但这座雕像却至今未被考古学家所发现.

Keep breakables out of reach of very young children.

把易碎物品放在小孩子够不到的地方。