将你的主要分支连接到中间图片，并将你的第二级和第三级分支连接到第一级和第二级，以此类推。

Connect your main branches to the central picture and connect your second-and-third-level branches to the first and second levels, etc.

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问题是我们不仅有一级情绪，还有二级情绪——关于其他情绪的情绪。

The problem is we have not just primary emotions but also secondary ones-emotions about other emotions.

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早在2007年佳士得购得该画廊时，许多人就质疑这个一级与二级市场非传统结合物的健康状况。

When Christie's acquired the firm in 2007, many doubted the health of this unconventional alliance of the primary and secondary market.

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Then there's a formula that dictates how much Tier I capital and how much Tier II capital they have to hold.

还有一个公式可以计算出,他们必须持有,多少一级资本和多少二级资本

耶鲁公开课 - 金融市场课程节选

We call these first, second, third ionization energies in sequence. This is the first ionization energy.

我们按照顺序把这些叫做一级，二级,三级电离能，这是初级电离能。

麻省理工公开课 - 固态化学导论课程节选

Actually there are two discount rates; there's primary and secondary.

事实上，这里有两个贴现率；,一级贴现率和二级贴现率。

耶鲁公开课 - 金融市场课程节选