Prices fluctuate, in response to harvests, natural disasters and political instability; and when they rise, it takes some time before new sources of supply become available.
价格会随着收成、自然灾害和政治不稳定而波动；当价格上涨时，需要一段时间才能找到新的供应来源。
One study of ninth-grade students found that 50 percent of friendships among ninth graders changed from one month to the next, signaling striking instability in friendships.
一项对九年级学生的研究发现，在九年级学生中，50%的友谊每个月都会发生变化，这表明友谊极其不稳定。
Resentment against Germanic chieftains achieving high rank in the Roman military and factionalism among Roman leaders were among the causes of the period's considerable instability.
对于日耳曼部落首领在罗马军队中获得高地位的不满和罗马领导人之间的党派之争是该时期局势剧烈动荡的一部分原因。
But the fact that 4 in 10 Americans can't come up with $400 in an emergency is a commonly cited statistic for good reason: economic instability stretches across race, gender, and geography.
但是，每10个美国人中就有4个在紧急情况下拿不出400美元，这个数据常被引用，理由也很充分，即经济不稳定跨越了种族、性别和地域因素。
All this makes for dangerous instability.
所有这些都会导致危险的不稳定性。
Potential instability is a great danger.
不安定隐患可能带来极大危险。
But it won't create regional or global instability.
但它不会制造地区或全球的不稳定。
Fear of instability has kept money changers busy.
由于人们害怕局势有变，换钱的商贩生意很好。
A whiff of instability would spread panic in the oil market.
一丝丝不稳定都会将恐慌迅速传遍整个石油市场。
It may sound minor, but this has a big influence on instability.
这听起来微不足道，但对于稳定性却影响极大。
The extra security also led to instability and compatibility problems.
这种附加安全也导致不稳定及兼容性问题。
I used it to demonstrate the inherent instability of financial markets.
而我，则用它来解释金融市场所内禀的不稳定性。
This poisonous combination could fuel instability rather than assuage it.
这种有害的结合，只会加剧而不是减少不稳定性。
The royals need a woman with Diana's glamour but without her instability.
皇室成员需要一名有着戴安娜王妃般魅力，却没有她那么不稳定的女性。
He said it is hard to tell what will happen because of regional instability.
他表示由于地区局势不稳，很难判断将来会发生什么。
I remember saying, "My stability is not based on the instability around me."
我记得曾说过，“我的稳定不是以我周围的不稳定做基础的。”
This relates to the second, more long-term issue—the risk of core instability.
而这也关系到第二个更为长期的问题，即核心不稳定性风险。
Any instability or orbital decay can be corrected with thrusters and an onboard engine.
任何的不稳定和轨道衰变都能通过推进器和机载发动机修正。
Such a period of instability could lay ahead if the European and US volatility endures.
如欧美经济波动持续，随之而来的可能是社会不稳定。
China is right to worry about instability if workers in exporting companies lose their jobs.
如果出口公司的工人丢掉了工作，中国担忧不稳定也不无道理。
The continuing instability in the Middle East caused stockmarkets in the Gulf region to tumble.
持续动荡的中东局势导致海湾地区股市暴跌。
The continuing instability in the Middle East caused stockmarkets in the Gulf region to tumble.
持续动荡的中东局势导致海湾地区股市暴跌。
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