So there are really two choices here.

即这儿有两种选择。

麻省理工公开课 - 固态化学导论课程节选

Depending on where the assets expected returns are and the assets' standard deviations, we can see that we might be able to do better than--have a lower variance than either asset.

根据资产的预期收益,以及收益的标准差，可以看到我们有更好的选择,这里的方差值比以上两种方案都要低。

耶鲁公开课 - 金融市场课程节选

So there are two electron configurations in the n equals one shell, if we follow according to the selection rules that we spelled out last day.

如果根据上次课,我们阐明的原子光谱选择定则，我们就会知道在n等于1的那一层,有两种电子图像构型。

麻省理工公开课 - 固态化学导论课程节选

So here Player I's strategy set, she has two choices top or bottom, represented by the rows, which are hopefully the top row and the bottom row.

这是参与人I的策略集合,她有上下两种选择,用横排来表示,即上下两排

耶鲁公开课 - 博弈论课程节选