But I'm talking here--this is the actually the frontier-- the best possible portfolio consisting of three assets.

但在这里我说的是-,边界表示了三种资产最好的组合。

耶鲁公开课 - 金融市场课程节选

Typically--I don't know for those particular children, but typically on those tasks three-year-olds and young four-year-olds tend to fail, and around the age of four or five kids tend to succeed.

我不太了解那些特定儿童的情况,但一般来讲,三岁和刚进入四岁的儿童,通常会在这些任务中失败,而四岁或是五岁左右的儿童则通常会成功

耶鲁公开课 - 心理学导论课程节选

Of course, it's in minor and the voices will come in, but the bass is going, sort of plodding along in a basic duple but with a triple subdivision underneath of that.

当然,它是小调的,人声将会进入,但低音是这样,按基本的二拍子缓慢地行进,但在那下面还用了一个三连音的节奏细分

耶鲁公开课 - 聆听音乐课程节选

There were some twelve to fifteen different widths of railroads in the Northern states alone by the 1850s, and you could go into one town on a gauge, i don't know, three feet wide but on the other side of town it would come out four feet wide.

在五十年代,单就北方州的铁道,就有十二到十五种不同的轨距,你可能在一条三英尺宽的铁道上进镇,但在另一边出镇时,它变成四英尺宽了

耶鲁公开课 - 美国内战与重建课程节选