Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems.
数学模型也揭示了食物网可能是不稳定的，顶级肉食性动物的微小改变会对整个生态系统产生巨大影响。
Avoid the time near December 19 when Venus will be unstable.
但避免12月19日左右金星将不稳定的时间。
You don't have to worry she might fall off or her landing might be unstable.
你不用担心她会跌下来或是跳下时站不稳。
If we didn't raise living standards in the countryside, the society would be unstable.
如果不解决这百分之八十的人的生活问题，社会就不会是安定的。
If you select two points on closed surface (a cylinder for example), the result may be unstable.
如果你选的两点在一个封闭的面上(例如圆柱)，那结果是不稳定的。
To study on operation of synchronous generator rectifier systems may be unstable under certain conditions.
同步发电机整流系统的运行实践表明，该类系统存在着运行稳定性问题。
When people read my works they feel they are on pins and needles and their convinced rule and law begin to be unstable.
人们阅读我的作品时，感觉如坐针毡，原先固守的规则和律法都受到了冒犯。
The input saturation can greatly deteriorate the performance of the systems, and even drive the systems to be unstable.
输入饱和往往会严重影响系统的各项性能，甚至导致系统不稳定。
The learning of the bright student who acquires knowledge with ease and speed is felt to be unstable; easy come, easy go.
聪明的学生学得又快又轻松，但他们学到的知识是不牢固的，容易获得也容易失去嘛。
At higher speeds on slippery surfaces with no burn, keeping your pedals parallel would be unstable and your tires will want to slide-out.
当在滑溜的路面过弯且速度更快时，踏板水平的姿势会显得不稳并且轮胎可能会侧滑出去。
Should the dollar's value continue to be unstable, Asian countries will tilt towards the euro in replenishing their foreign exchange reserves.
如果美元的价值不能保持稳定，亚洲国家将倾向于选择欧元补充其外汇储备。
Yet these will be the very areas of life that will be unstable and therefore prone to cause errors in judgment, indecisiveness, and forgetfulness.
这段时间将会面临着不稳定，容易造成判断错误，犹豫不决和健忘。
Carl Oppedahl: PASAT was developed many years ago and turns out to be unstable — it sometimes crashes without explanation, losing the work that has been done.
CarlOppedahl：PASAT是十多年前开发的，人们发现这个程序不太稳定——有时候会突然崩溃，所做的工作也丢失了。
So, in Elaboration, the breadth view of the requirements (the vision) is expected to be unstable, changing as the depth view is understood and executables are created.
所以，在细化阶段，需求的宽度视角(远景)是不稳定的，会随着对深度视角的理解和可执行性的生成而变化。
Weakly damped discrete modes can exist in these gaps. These weakly damped modes can be driven to be unstable by energetic particles, which results in the particle loss.
在空隙中可以存在低衰减的分立的本征模，它们容易被高能粒子驱动而不稳定，从而在一定条件下会造成高能粒子的损失。
This might lead to the formation of hydrates, which could be unstable if disturbed, and it might also lead to a lake of CO2 on the ocean floor which would acidic at the margins.
这可能导致水合物的形成，如果水合物被搅动，它也是不稳定的，而且它也可能在海底产生大量的CO2，使边缘部分呈酸性。
But they point out that wormholes might be unstable, or that intense radiation and sub-atomic forces surrounding the entrance to the wormhole would kill anyone who dared to enter.
但他们指出，虫洞可能是不稳定的，或者强烈辐射和亚原子力周围的虫洞的入口会杀死任何人谁也不敢进去。
This might lead to the formation of hydrates, which could be unstable if disturbed, and it might also lead to a lake of CO2 on the ocean floor which would be acidic at the margins.
这可能导致水合物的形成，如果水合物被搅动，它也是不稳定的，而且它也可能在海底产生大量的CO2，使边缘部分呈酸性。
Rescue sites will often be unstable and hide many dangers: broken glass, protruding nails, weakened floors or stairs, downed electrical wires, escaping gas, broken sewer and water pipes.
需救援的地点往往不坚固，且潜藏着危险：碎玻璃，扎出来的钉子，脆弱的地板和楼梯，掉落的电线，泄漏的燃气，破损的下水道和水管。
But in this system, the cutting force is directly imposed on the system and is a direct disturbance. This may affect the control system to be unstable and to reduce its positioning accuracy.
但加工过程中切削力会对系统造成直接干扰引起系统不稳定和定位精度下降。
The analysis of slope stability is always a problem which geotechnical workers think much of, because a steady slope in the nature condition may be unstable for the sake of human remodeling.
边坡稳定性分析一直是岩土工作者十分重视的问题，天然状况下稳定的边坡经过人工改造就有可能产生失稳。
The voltage charged on transmission line will be unstable when capacity of transmission line is very low and the charging voltage is high. It then influences the stability of the output pulse.
传输线电容量小而充电电压高时，传输线上的充电电压不稳定，影响输出脉冲电压的稳定。
Without introducing any external excitation to the system input, this paper gives consistent estimates for the coefficients of an ARMAX system, which is allowed to be unstable and of nonminimum-phase.
本文在不外加输入激励情况下，讨论了开环不稳定和非最小相位的ARMAX系统系数的一致估计。
The energy absorbed by the chlorophyll molecules of the unstable autumn leaf is not immediately channelled into useful products and processes, as it would be in an intact summer leaf.
不稳定的秋叶叶绿素分子吸收的能量，不会像在完好的夏叶中吸收的能量那样立即传输到有用的产品和工艺流程中去。
If their population is tracked through time, it will be seen to be particularly unstable—soaring and plummeting in irregular cycles.
如果对它们的数量进行时间记录，就会发现它是很不稳定的——以不规则的周期急剧上升下降。
For in our unstable region, no one can guarantee that our peace partners today will be there tomorrow.
在我们的不稳定地区，没有人能够保证我们今天的和平伙伴明天还是和平的。
If you are in a mountainous area, or near unstable slopes or cliffs, be alert for falling rock and other debris that could be loosened by the earthquake.
如果你在山区，或是在不稳定的斜坡或山崖旁，注意那些因地震而从山上滚落下来的岩石和其它山体残骸。
It proved to be quite unstable despite the frequent restarts, and that's why I abandoned it as of version 1.6.3.
尽管频繁地重新启动，但经过证实它相当不稳定，这就是我使用版本1.6.3时抛弃它的原因。
It proved to be quite unstable despite the frequent restarts, and that's why I abandoned it as of version 1.6.3.
尽管频繁地重新启动，但经过证实它相当不稳定，这就是我使用版本1.6.3时抛弃它的原因。
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