put options

基本解释

Mexico bought put options – contracts that give the holder the right to sell oil at a predetermined price.
墨西哥购买了看跌期权——令持有者有权以预订价格卖出石油的合约。
Put options are so dangerous because when markets are volatile, their riskiness does not rise steadily, but spikes very sharply within a very short space of time.
卖出期权的危险在于，当市场动荡不堪时，其风险并非逐步显现，而是在极短的时间内突然爆发。
'Warren Buffett believes in this rule as well,' he added, referring to Mr. Buffett's bullish selling of long-term put options on the Standard & Poor's 500-stock index in recent years.
他说，巴菲特(Warren Buffett)也相信这一准则。由于看涨股市前景，巴菲特近年来持续抛售标准普尔500股指期货的长期看跌期权。

So what we're doing is filling in those eight electrons following the Aufbau principle, so our first electron is 1s going to go in the 1 s, and then we have no other options for other orbitals that are at that same energy, 1s so we put the second electron in the 1 s as well.
它会是什么样子呢,我们正在做的是将这8个电子按照奥弗,堡原理进行填充,所以我们第一个电子将会进入，然后我们没有其他的,轨道的选择在同一个能级，所以我们把第二个电子也放入。
麻省理工公开课 - 化学原理课程节选
The third group that was given the candies and put in a positive playful mood outperformed the other two groups significantly-- they thought about more options and they actually came up with better solutions with that problem.
第三组得到糖果,并获得积极愉快的心情,明显比另外两组有更好表现-,他们考虑更多选择,得出更好的问题解决办法。
哈佛公开课 - 幸福课课程节选

Special Offer: Make money on the short side of the market with put options.
FORBES: Fed Stays Bull's Execution
In this trade, the put options act as short-term insurance for the long stock position.
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