a second

基本解释

The sound reflected back in one tenth of a second.
声音在十分之一秒以后反射回来。
With a database like this, you can look up anything you want in a second.
有了这样一个数据库，你可以在一秒钟内查询到任何你想要的东西。
If you pause for a second and think of the many colours, shapes and textures around us, they are all the product of specific and unique chemical reactions that take place within.
如果你停顿一秒钟，考虑一下我们周围的许多色彩，形状和质地，它们就都是这些叶子体内发生的具体而独特的化学反应产物。

Marie Curie became the first person to be awarded a second Nobel Prize in nineteen eleven, this time in chemistry.
STUDENT: Right, we're going to do that in a second, but the answer is Fibonacci numbers, we define the first two.
学生：听不见：,我们马上会试一试，但是答案是斐波那契数列，我们可以定义下最初的两个数。
麻省理工公开课 - 计算机科学及编程导论课程节选
There's a second figure here standing ab extra, and that's the moon hovering overhead: "while over-head the Moon / sits Arbitress."
这里有第二个置身事外的角色，就是高高挂在空中的月亮：,“月亮高挂天心，像个公正的决断人“
耶鲁公开课 - 弥尔顿课程节选

Partly because of high gas prices, consumers are taking a second look at hybrid cars.
NPR: Hybrids and the 'Halo Effect' of Car Ads