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Getting ships to generate more white foams as they navigate the world’s oceans could counteract the impact of climate change. That’s the conclusion of a study carried out by scientists at the University of Leeds here in England. Rebecca Morale sent this report.

This is the latest idea from the controversial field of geo-engineering, man-made global fixes to climate change. But what’s unusual about this is that the technology for it already exists. As ships sail across the waves, their wake stands out from the dark ocean waters. Scientists calculate that if the bubbles created by large vessels were up to 100 times smaller, the earth’s average temperature will drop by half a degree Celsius. This would counteract rising temperatures. And some warn that there could be unforeseen consequences for ocean life.

You are listening to global news, the best stories, interviews and on-the-spot reporting from the BBC news. Still to come, the unwritten rules of the British pub.

Christmas is coming. And as is the tradition in Britain, the pubs are full of merry revelers. And sometimes it can not get a bit out of control. But now there are some guidelines to pub etiquettes which have goneviral on the web. They state, for instance, “Do not approach the bar until you know what you want”, “Don’t order ten drinks one at a time, and then pay for the more one at a time”; “Don’t click your fingers or whistle at the bar staff”. So what are some of the rules that landlords have implemented?

There is no laptops. And there is no the new thing. What’s it? A tablet? It’s not an office. People who come in here are asked to hang their coats. To small pub and to hang them up for other people to sit is essential. Some people stop moving tables. That’s another rule here. I’m used to having rules. I led my rules. When I tell them to smile, they’ll smile. When I tell them to be quiet, they’ll be quiet. That’s it. That’s my rules.

Of all stories to come out about the school in Pakistan that was attacked on Tuesday, none perhaps was more striking than that of the teachers’ bravery. One of them told her pupils to flea even as she was set onfire by the militants. Another with her own story was the headmistress of the school Tyra.

I’m now in the family home of Tyra, the principle of the army school, who was herself killed in the attack. And I’m with her son.

词汇解析

hollow

难度：3星常用词汇，属常用6000词

英汉解释

adj.空的；空洞的；凹陷的；虚伪的；(声音)沉闷的

n.山谷；洞；窟窿

vt.挖空

vi.形成空洞

adv.完全地；彻底

参考例句

用作形容词 (adj.)

She could hear nothing but the hollow echo of his steps.

除了他的脚步的低沉回音，她什么声音都听不到。

用作名词 (n.)

I crawled under the house and crept into a dark hollow of a brick chimney.

我爬到屋子底下，钻进了砖烟囱的黑窟窿里。

用作及物动词 (vt.)

The Indians used to hollow out a log to make a canoe.

印第安人过去常挖空圆木制成独木舟。

用作副词 (adv.)

I played Max at chess yesterday and beat him hollow.

昨天我跟麦克斯下棋，杀得他一败涂地。

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restraint

难度：3星常用词汇，属常用6000词

英汉解释

n.克制；抑制；束缚

参考例句

用作名词 (n.)

The police appealed to the crowd for restraint.

警方呼吁群众保持克制。

He is a man always speaking with restraint.

他是个说话拘谨的人。

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moral

难度：4星核心词汇，属常用3000词

英汉解释

adj.道德的；精神上的

n.寓意；道德；品行；伦理

参考例句

用作形容词 (adj.)

She regards his moral faults with charity.

她宽恕他的品行不端。

用作名词 (n.)

The moral of this story is ‘Better late than never'.

这个故事的寓意是｀迟做总比不做好＇.

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flame

难度：4星核心词汇，属常用3000词

英汉解释

n.火焰；热情；燃烧；情人

v.燃烧；爆发；面红

参考例句

用作名词 (n.)

The candle flame flickered and went out.

烛火摇曳着，随即熄灭了。

用作动词 (v.)

The evening sky flamed with red and orange.

傍晚天空的颜色是一片火红和橘黄相间。

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security

难度：4星核心词汇，属常用3000词

英汉解释

n.安全；保证；证券；债券；抵押；防护措施

参考例句

用作名词 (n.)

I'll undertake for your security.

我将保证你的安全。

The value of a derivative is based on another security.

金融衍生工具的价值以另一种债券为基准。

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hence

难度：4星核心词汇，属常用3000词

英汉解释

adv.因此；从此以后

参考例句

用作副词 (adv.)

It is very late; hence you must go to bed.

时间已经很晚了，因此你必须睡觉去。

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legislation

难度：3星常用词汇，属常用6000词

英汉解释

n.法律；法规；立法

参考例句

用作名词 (n.)

The government will introduce legislation to restrict the sale of firearms.

政府将制定法规限制枪支出售。

The conservationists will not take kindly to the legislation.

自然资源保护论者对这项立法不会做出善意的反应。

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