Next the researcher introduced a third option, a third paddle that would initiate a new trial, giving the dolphin the choice of passing on difficult trials.

接下来，研究人员引入了第三种选择，用第三只桨启动一个新的试验，让海豚选择跳过困难的试验。

youdao

Some estimates reckon that about a third of Camden's houses are empty. A third of its people are in poverty and a fifth are unemployed.

据估计，卡姆登市约有三分之一的房子空置，三分之一的市民生活在贫困线以下，五分之一的人没有工作。

youdao

The third is that now, in the early 21st century, we are seeing the emergence of a third replicator.

第三点是如今在21世纪的开端，我们正在目睹着第三种复制因子的诞生。

youdao

But the fishing industry in Louisiana is responsible for about a third of all seafood caught in the United States.

VOA: special.2010.05.04

At the same time you will get not just the second or third implementation of a good idea funded.

同时你得到的又不仅仅是对新想法的,二手或者三手实施方案。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选

We give them a list of areas in the business, and they get to select their first, second, third choice.

在我们给出的公司业务的很多领域中，做出第一，第二，第三选择。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

We are not talking a major change in their fortunes - a matter of a a third of a percentage point.

BBC: One step back from the abyss

The survey also looked at oily fish consumption, which has increased from about a quarter of a portion to a third of a portion per week.

BBC: British diet 'could do better'

Does CouchSurfing represent something new, then, or is it simply an Internet-enabled version of the age-old practice of crashing with the friend of a friend of a neighbor of a third cousin of someone you sat next to on a bus?

NEWYORKER: You��re Welcome