This is very easy molecule because we know exactly where to put them without even having to think, we only have one option, and we'll make a triple bond between the carbon and the nitrogen.

这个分子非常简单，因为我们知道应该把它们放在哪里，甚至不用去想，我们只有一个选择，我们将在碳与氮之间形成一个三键。

youdao

This is very easy molecule because we know exactly where to put them without even having to think, we only have one option, and we'll make a triple bond between the carbon and the nitrogen.

这个分子非常简单,因为我们知道应该把它们放在哪里,甚至不用去想，我们只有一个选择，我们将在碳与氮之间形成一个三键。

麻省理工公开课 - 化学原理课程节选

Single mothers, who are disproportionately low-skilled, face a triple disadvantage: they have only one worker, they earn low wages and they pay all the costs of raising a child.

ECONOMIST: Out of sight, out of mind