Many problems in environmental engineering have required the concerted efforts of scientists and engineers.

A silver-mantled knight dived in like a flash of daylight with blazing wonders.

一位身披银袍的骑士像一道白昼潜入,带来闪耀的奇迹.

The spear looked like a flash of light as it went right up to the cloud.

这梭镖看起来像一道闪光,直向那片云飞去.

Roger Bacon's writings were like a flash of light in a profound darkness.

罗杰-培根的著作就像茫茫黑夜中的一束光线.

The white flag is a symbol of a truce or surrender.

白旗表示停战或投降.

As the day wore on Brand found himself increasingly impressed.

白天慢慢过去，布兰德发现自己兴趣愈发浓厚。

The night is too dark for us to see.

夜间太暗,我们看不见.

The army attacked at night when the enemy was asleep.

在夜间敌人熟睡时军队发起了攻击.

The finals of each event started late, at 10 p.m.

这次跳板和跳水两项决赛均安排在晚间, 晚上10时开始.

They watched the familiar mountains fade into the darkness.

他们看着熟悉的群山渐渐隐没到黑夜当中。

The decision was reached overnight.

决定是在夜里作出的。

We can gain knowledge, by reading by reflection by observation or by practice.

求知门径很多, 或阅读,或回忆,或观察,或实践.

The move was good public relations.

该举措是有效的公关手段。

That was a pretty low-down trick to play!

玩弄那套伎俩真可耻!

The present some steel works began to adopt this new production records.

目后的一些钢铁厂也不休拔取这栽陈的不入产纪录办法.

Using different hue optical variable ink to get different observation.

拔取不差别色相的平变油墨可得回不差别的查察成果.

When you install plate thickness 4.05 mm elastic gasket materials.

安设印版时拔取厚度为4.05毫米的不塑性垫材.

Prepress adopted country, the main trend also vary between countries vary.

拔取印后技艺因国度而同, 次要的趋向也因国度不同而有不同.

However, the use of smooth metal cardboard, aluminum works best.

但是, 拔取质地凹凸的金属卡纸 、 电化铝质料成果最好.

This was followed by the adoption of alkali-dye or pigment or filler.

其次是拔取耐碱性颜料或染料或增添料.

According to the paper surface properties of rational choice hot stamping foil.

根据纸张暗不天本能机能公道拔取烫印箔.