Since the early twentieth century, geophysicists have understood that the mantle churns and roils like a thick soup.

自二十世纪初以来，地球物理学家已经了解到地幔像浓汤一样搅动和翻滚。

The sea roils again, waves surging high, crash! Crash!

海又动荡，波浪跳起来，轰！轰！

The sound of the lute roils and surges like a torrent.

琴声中表达出来的感情奔腾澎湃得像流水一样。

The national turmoil generally roils a country's financial markets.

国家的混乱广泛的搅乱一国的财金市场。

It roils the chemical innards of things, exciting their molecules to vibrate and crash into each other.

它激活物质的内部化学构造，使它们的分子震动，然后碰撞在一起。

DC mill is a new kind of Four-High mill in which gauge and shape can be adjusted simultaneously by deviating and crossing the work roils.

DC轧机是一种通过工作辊的偏移和交叉来实现板厚板形综合调节的新型四辊轧机。

The relations between Chnia and Southeast Asia countries underwent serial roils and changes with changes of themselves and weakness or strength of the Qing Dynasty.

中国与东南亚国家的关系，随着各国自身的变化及清王朝国势的强弱，经历了一系列的动荡和演变。

The formation point-roils were difficult, for through the inverted half Jonathan had to think upside down, reversing the curve of his wing, and reversing it exactly in harmony with his instructor's.

列队定点翻滚是很难学的，因为在倒转时，乔纳森得头朝下、脚朝上倒过身子思考问题，同时还要把翅膀倒弯过来，而且要弯得恰到好处，倒好与他的导师一致。