Researchers have known since the nineteen thirties that the actively growing tip of a plant releases a hormone called auxin.

VOA: special.2009.10.13

I want to finish this discussion by including the anti-bonding orbital, and this is a tip for you when you're drawing your molecular orbital diagrams, any time you draw a bonding orbital, there is also an anti-bonding orbital that exists.

我想要以包含反键轨道,来结束这个讨论，告诉你们一个,画分子轨道图的小技巧，任何时候你画一个成键轨道，都会存在一个反键轨道。

麻省理工公开课 - 化学原理课程节选

So here's a tip if you've not picked up on this already.

这里有一个小的提示，如果你们还没有注意到。

哈佛公开课 - 计算机科学课程节选

Male circumcision is the cutting off of a small amount of skin from the tip of the penis.

VOA: special.2009.04.01

What's a tip off to something being composite?

怎么能确定什么东西是合成的呢？

耶鲁公开课 - 死亡课程节选

But it does have a blunt tip, so that if it accidentally goes into my finger, it's much less likely to perforate."

VOA: special.2010.02.10

And millions of other people,"the average", benefit a great deal because of the study of the best, of the "growing-tip".

千千万万的“普罗大众，因对最优秀的个体的研究，而受惠。

哈佛公开课 - 幸福课课程节选

One was coming at me with a huge spear, with its sharp tip pointed at my heart!

VOA: special.2010.07.10

The other tip I'm going to give you is any time you see a chain molecule, by chain I just mean many different atoms written out in a row.

我要告诉大家的另外一个小窍门是,每当你看到一个链状分子，链状的意思是说很多,不同的原子写成一行的形式。

麻省理工公开课 - 化学原理课程节选

"If you were to design the perfect plug for a child's airway, you couldn't do much better than a hot dog tip."

VOA: standard.2010.02.23

But TEFRA was coupled with a promise by Tip O'Neil and Bob Dole that for every dollar in tax increases government spending would be cut by 3 dollars.

但前提是，欧尼尔和鲍勃·杜尔必须承诺,每增税1美元,政府财政支出须减少3美元。

斯坦福公开课 - 经济学课程节选

In a culture that respects age, Cambodians tend to tip better than the tourists.

VOA: standard.2010.06.14

The friends immediately bought Lotus shares and then -that was June 2--by June 5, twenty-five people had bought -had spent a half a million dollars to buy on this tip.

他的朋友们立刻购买了莲花公司的股票,那天是6月2号,截至6月5号,一共有25个人,因为小道消息购买了股票,资金达到50万

耶鲁公开课 - 金融市场课程节选

This town of 4,000 people, whose numbers swell to 40,000 in the summertime, lies on the tip of a little peninsula that sticks out into the mouth of the Delaware Bay.

VOA: standard.2010.03.15

What I am frankly espousing here ' is what I have been calling "growing-tip statistics," taking my title from the fact that it is at the growing tip of a plant " that the greatest genetic action takes place."

我非常支持,'成长尖端统计学“,我的头衔来自以下的研究发现,最优秀的遗传基因会在,幼苗的成长尖端出现“

哈佛公开课 - 幸福课课程节选

The comments came as the department released a report, mandated by Congress, cataloguing alleged war crimes in the bitter fighting on the northern tip of Sri Lanka early this year that led to the final government rout of separatist Tamil Tiger guerrillas.

VOA: standard.2009.10.22

Authorities say an intelligence tip related to a possible terror strike in the capital ahead of Independence Day ceremonies August 15 led to the arrests Thursday night in the parking lot of a shopping district in the old part of the city.

VOA: standard.2009.08.07