At one level this is a truism: By definition, people must be selling when prices fall.

从一个角度来说，这是真理：根据定义，在价格下跌时，人们一定在卖出。

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Seeing at close range the primal forces that shaped the planet can be hypnotic. You cannot allow yourself to fall under a volcano's spell, especially one as unpredictable as Nyiragongo.

近距离观察这种塑造地球的原始力量很是让人着迷，但你不能任由自己拜倒在火山的魅力之下，尤其是像尼拉贡戈这种难以捉摸的火山。

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So if the cash flows fall short of the interest payments, they need to be restructured — at a big cost to the investors who own them.

因此一旦现金流不及利息支出所需，这些证券就面临重组——而持有这些债券的投资者将付出高昂代价。

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He will be a senior at American University in the fall.

VOA: special.2010.06.18

When the charge is applied, if the upper plate is negative, we would expect that the negative droplet would be repelled at a rate exceeding the gravitational fall.

当电荷起作用时，如果上边的板子是负电的，我们可以期待负电的液滴会,超过重力下降速度的速度被排斥。

麻省理工公开课 - 固态化学导论课程节选

This would allow a risky portfolio to be liquidated at a predictable pace and cost should prices fall in response to a drying-up of liquidity.

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Or consider a broker who e-mails someone a question about the trading volume at which a certain stock would be likely to rise (or fall).

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In a short sale, a trader sells borrowed stock, hoping it will fall in price and can be repurchased later at a profit.

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