1·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。
2·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。
3·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。
4·Brain dead patients could experience a wide range of complications, including diabetes insipidus, poikilothermia and metabolic instability.
脑死亡病人将经历一系列并发症，包括尿崩症，异型体温和代谢不稳定。
5·Should that happen, growth in Europe would almost certainly drop and there would be instability across the system.
如果出现这种情况，欧洲的增长几乎肯定会停滞，整个体系也会不稳定。
1·The mechanism of this instability is based on the cycle of acoustic waves between their corotation radius and the shock.
这种不稳定性的机制是基于声波在其同心圆半径和冲击之间的循环。
2·No code base contains all packages with abstractness and instability values of 1 or 0 — most packages have values somewhere between the two.
没有代码基包含所有抽象性和不稳定性值为1或0的包——多数包的值位于这两个数字之间。
3·Hundreds of years of banking history attest to the instability of this "maturity transformation".
数百年的银行业历史证明了这种“期限转换”的不稳定性。
4·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。
5·Because of this instability, it's very difficult to store elements as Stark does in his arc reactor: They need to be moving at nearly the speed of light.
由于这种不稳定性，人类很难做到像斯塔克那样将新元素储存在他的方舟反应堆中，再说电影中它们还需以接近光速被移动。
1·For centuries, Japanese authors, poets, and artists have mulled over the existential instability of their island life.
几个世纪以来，日本作家，诗人和艺术家们都在思考这种不安定的岛屿生活。
2·Desperation and instability are huge turn offs.
绝望和不安定总是使人厌烦。
3·This makes Iraq increasingly less of a mess domestically but more a factor for regional instability throughout the Middle East.
届时伊拉克国内将一片混乱，是造成整个中东地区不安定的主要因素。
4·This is also the factor leading to the social instability.
这也是导致社会不安定的一个因素。
5·Instability in Yemen has left the country facing a hunger catastrophe, with nearly half of people without enough food, aid groups have warned.
援助机构警告，也门国内不安定的局面使民众面临饥荒灾害的威胁，近半数人口没有充足的食物。
1·The low-frequency instability in variable speed constant frequency doubly fed induction generator(DFIG) widely used in wind power generation is investigated.
研究了广泛应用于风力发电的变速恒频双馈感应电机系统中的低频不稳定现象。
2·Then base on the former research platform, an simulation of the core saturation instability caused by three-phase grounding fault is processed, thus the new judgment method is validated.
并基于直流输电开发研究平台，对三相接地故障激发的铁心饱和不稳定现象进行了仿真研究，验证了该方法的正确性。