you know, grind that ledge or do that rail or jump those stairs.

噢，滑窗台，走栏杆或者跳楼梯。

滑板的魅力 - SpeakingMax英语口语达人

If you focus on some of the minutia of a site like this, you know, it's useful to be able to jump to a particular date whether in the future or in the past.

如果你关注像这样一个网站的一些细节，你会发现，若能跳转到,不论过去还是将来的一个特定日期，那将是很有用的。

哈佛公开课 - 计算机科学课程节选

And what we predict as an energy difference between two levels, we know should correspond to the energy of light that's either emitted, if we're giving off a photon, or that's absorbed if we're going to take on a photon and jump from a lower to a higher energy level.

我们预测，两个能级之间的能量差，我们知道，它要么和发出的光有关,如果它发出光子的话，要么它吸收光子,从低能级跃迁到，更高能级上去。

麻省理工公开课 - 化学原理课程节选

A primer is a short RNA sequence or DNA sequence that gets sort of the process of replication jump started, and that's just because of the biological properties of DNA polymerase that that primer's needed.

引物是一段短的RNA或者DNA序列,引物是整个复制的起点,因为DNA聚合酶的,生物特性,引物在复制过程是必不可少的

耶鲁公开课 - 生物医学工程探索课程节选