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。

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.

youdao

如果只存在一个唱片，我就选择它。

If only one album exists, I just take it.

youdao

杰基选择的公司计划只雇用一个人，但有二十多人申请了这个工作。

The company Jackie chose planned to employ only one person, but more than twenty people applied for the job.

youdao

But that's the only one he's going to lose because you were defending the wrong pass.

但是他只会损失一个营,因为你选择了在错误的途径设防

耶鲁公开课 - 博弈论课程节选