He had led an unsuccessful fight in Congress to keep America using silver.

VOA: special.2010.07.01

What this is is learning the relationships between what you do and how successful or unsuccessful they are, learning what works and what doesn't.

操作性条件作用,是在学习行为与成功,或失败程度之间的关系，学习什么行为起作用,什么行为不起作用。

耶鲁公开课 - 心理学导论课程节选

They lose, and they're forced to surrender Azov to the Turks after an unsuccessful war.

他们被打败,在一场战败之后,俄国不得不把亚速奉还给土耳其人

耶鲁公开课 - 欧洲文明课程节选

He had been on an unsuccessful date with a girl he really liked.

VOA: special.2010.04.05

But if there is another argument for that claim, I'm eager to hear it, because this argument, at any rate, seems to me to be unsuccessful.

但如果确实有这种论点存在，我迫不及待地想听一听，因为这个论点无论怎么看，似乎都不会说得通。

耶鲁公开课 - 死亡课程节选

Over the years, he had invested a lot of money in unsuccessful businesses.

VOA: special.2010.03.21

There are successful coupon clippers and there are successful securities resellers and they tend to make their money off of the unsuccessful people in the other class.

既有成功的票息剪券投资者,也有成功的债券经销商,他们希望从其他阶层,不太成功的投资者身上赚钱。

耶鲁公开课 - 金融市场课程节选

Sometimes the hunters were completely unsuccessful in killing any of the animals.

VOA: special.2009.02.15

The sermons were entirely unsuccessful.

这个布道也没取得一点成功。

耶鲁公开课 - 心理学导论课程节选

He made an unsuccessful attempt to escape by jumping into the ocean.

VOA: special.2009.05.27

And so, Descartes' attempt to establish the distinctness of the mind, the immateriality of the mind, on the basis of this Cartesian thought experiment, I think that's unsuccessful.

所以,笛卡尔试图,用他的卡式思想实验来证明,心灵的独立存在性,和非物质性,我认为这种尝试是失败的

耶鲁公开课 - 死亡课程节选

However,he was unsuccessful in an attempt to buy Cuba from Spain.

VOA: special.2009.04.23

Unsuccessful branches ended.

VOA: special.2009.02.25

President Bashir allowed him to return to Sudan in 1999 and he led an unsuccessful run for president in elections in 2000.

VOA: standard.2009.05.31

In 2005,then-minority Senate Democrats mounted an unsuccessful effort to filibuster the confirmation of Supreme Court Justice Samuel Alito, who was nominated by former-President George W.Bush.

VOA: standard.2009.05.31

The toads are native to the Americas. They were brought to Queensland in the 1930s in an unsuccessful attempt to eradicate beetles that were destroying sugar cane plantations.

VOA: standard.2010.02.07

Several attempts to reach the Supreme Court for comment were unsuccessful.

VOA: standard.2009.11.05

Representative Ron Paul, an unsuccessful candidate for the Republican presidential nomination in 2008, says the hope is that the Obama administration will focus on non-military means to resolve the Afghanistan situation.

VOA: standard.2009.03.17

"We must keep in mind how even apparently unsuccessful attacks on Western mass transportation systems can bring major cities to a halt, cost the enemy billions and send his corporations into bankruptcy."

VOA: standard.2010.04.01

When they take the field against Brazil Friday at Cairo's International Stadium, the Black Satellites, as Ghana's Under-20 team is known back home, will be aiming for their first championship after two previous unsuccessful final appearances.

VOA: standard.2009.10.15