umbrella effect

基本解释

Missile defences cannot fend off Russia’s huge arsenal, but countries hosting them place themselves under America’s umbrella, in effect becoming part of the defence of its homeland.
导弹防御系统根本无法应对俄罗斯庞大的军火库，但是对那些加入到导弹防御系统的国家来说，深层的意义在于他们通过这种方式被纳入了美国本土防御的一部分。
Via the travel of the edge shrinking inwards, a bulge of the spring bow positioned in the stick can be pressed, and the simple effect of convenient and safe umbrella closing is achieved.
藉内缩缘之移动可压触位于中棒内之弹弓凸出部，即可达到方便安全的简易收伞效果。
ip.com
As well as helping to make better umbrella-carrying decisions, the base-rate effect may also resolve the paradox of why even today's sophisticated weather forecasts are still regarded with suspicion.
除了帮助我们决定是否带伞，基础概率效应也解释了为何当今准确率颇高的天气预报仍然饱受质疑。