"The key finding of this meeting is that we have up to one-meter sea-level rise by 2100, based on our new insight of glaciers.

VOA: standard.2009.03.12

Let's listen to John Kander sit on one pitch level and then suddenly raise the whole thing up.

我们听到约翰·肯德尔选择了一个音高,然后突然升高了

耶鲁公开课 - 聆听音乐课程节选

At this point, we have no other choice but to double up before going to the next energy level, 2px so we'll put a second one in the 2 p x.

在这点上我们没有其他选择,而只有双倍填充,在到下一个能级之前，所以我们放入第二个电子至。

麻省理工公开课 - 化学原理课程节选

Many of the islands that make up the Maldives rise little more than one meter above sea level, and could disappear under the sea if global temperatures continue to rise.

VOA: standard.2009.11.09

One, at the first level, what are the cells that make up that tissue?

其一,在第一个层次上,构成那个组织的是哪些细胞呢

耶鲁公开课 - 生物医学工程探索课程节选

Now, to answer that, I'm going to back up one more level.

现在为了回答这个问题，我会退一小步。

麻省理工公开课 - 计算机科学及编程导论课程节选

Sure, there'd be some new particular puzzle you hadn't seen before, but you'd sort of step up a level and say, "Although I haven't seen this particular one before, I've seen crossword puzzles before.

当然肯定有你没见过的特殊填字游戏，但你会退一步说，“虽然我没见过这个特殊的填字游戏，但我见识过填字游戏。

耶鲁公开课 - 死亡课程节选

So that explains why they're so reactive, they're all very willing to give up that one s orbital and then drop to a lower energy level.

这就解释了它们的化学性质为什么非常活泼，它们都很愿意失去那个，s，电子,然后降到更低的能级上去。

麻省理工公开课 - 化学原理课程节选