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1·There could be many reasons and he was not going to waste time speculating on them.

原因可能很多，而他不打算浪费时间猜测这些原因。《柯林斯英汉双解大词典》

2·Government sources are now openly speculating about a possible successor for Dr. Lawrence.

各官方消息源现在正公开地推测继劳伦斯博士之任的可能人选。《柯林斯英汉双解大词典》

3·Now you're speculating about the future.

现在您在推测未来。

4·They are speculating on the imponderables of the future.

他们猜测着未来难以估算的事情。《柯林斯英汉双解大词典》

5·So he spit in contempt on his father's speculating.

因此他轻蔑的唾弃他父亲的投机行为。

6·And everybody is speculating about the capital.

所有人都在猜会是哪个首都呢。

7·He's speculating in stocks and lost a lot of money.

他在炒股，亏了不少钱。

8·This is the method that we have been speculating about.

这正是我们一直在思考的方法。

9·Within a year, the press was speculating about marriage.

一年之内，媒体已经在预测他们什么时候结婚了。

10·But that's not going to stop me from speculating that it might.

但是这并不能让我停止推测它也许有效。

投机

1·Since they are tradable instruments, they became bear-market warrants for speculating on deteriorating conditions in a company or country.

因为可以交易，它就变成了可以投机的，一种对一个公司或国家情况恶化的看跌凭单。

2·John Clemens, though trained as a lawyer, tried to support his family by running a store and speculating in real estate.

约翰·克莱门斯尽管受过做律师的训练，可还是要靠开店铺和做房地产的投机买卖来养家糊口。

3·The asymmetry encourages speculating on the short side, which in turn exerts a downward pressure on the underlying bonds.

这种不对称助长了对卖空的投机，反过来对基础债券施以下行压力。

4·Traders and fund managers got huge rewards for speculating with other people’s money, but when they failed the parent company, the client and ultimately the taxpayer had to pay the bill.

经纪人和基金经理们通过投机其他人的钱而获取巨额回报，但当他们把所打工的公司搞垮之时，却由客户并最终由纳税人负担。

5·Stock markets in Europe and America have fallen amid continuing worries about the debts of some European countries and new rules in Germany intended to limit financial speculating.

由于市场仍然担心欧洲某些国家的债务问题以及德国出台的旨在限制金融投机的新规则，欧洲和美国股市下跌。

猜测

1·I'm speculating, but it seems reasonable to me that what's causing this decline, or much of it, is the rise of the two-earner household.

我猜测，双职工家庭的日益增多导致了迁移率下降或者是大幅下降，但是对于我来说，这似乎是合乎情理的。

2·Many a jaw dropping on both sides of the Atlantic Ocean today following a report in the Wall Street Journal speculating that Google is interested in buying Opodo.

《华尔街日报》最近发表的一篇文章猜测，Google有意向收购Opodo。 这一消息使得大西洋两岸的很多人极为吃惊。

3·The cuts have been rushed through after financial markets began speculating that Italy was facing a Greek-style debt repayment crisis.

金融市场开始猜测意大利可能面临希腊风格的债务偿还危机之后，意大利仓促做出了削减预算的决定。

4·It's not worth speculating because nothing is set in stone and things change all the time in football.

这不值得去猜测因为任何事情都不是固定的，在足球圈里任何事情随时都会变化。

5·I have little interest in speculating on the universe or the human condition.

我对猜测宇宙和人类情况没什么兴趣。

(1)speculate onv. 推测；考虑