Proponents of theory A dispute theassumption that a school ofthousands of fish is highly visible.
这里的theory A 是批判一群鱼是可视的这个假设,。。还是表示认为这个假设,不带感情色彩。。。我记得托福里面好像是中性词吧dispute。。 虽然他是争论的意思。
还有。谁能给我理一下theory A 的逻辑吗?感觉不是很理解。。不是说被发现的几率稍稍高于单独的鱼吗。。后面又直接说群居是有利的。。感觉逻辑不通啊。。
第一次接触,无法理解。忘大神赐教。。拜谢
原文如下
Proponents of theory A dispute theassumption that a school ofthousands of fish is highly visible. Experiments haveshown that any fish can be seen, even in veryclear water, only within a sphere of 200meters in diameter. When fish are in acompact group, the spheres of visibility overlap. Thus the chance of a predatorfinding the school is only slightly greater than the chance of the predatorfinding a single fish swimmingalone. Schooling is advantageous to the individualfish because a predator's chance of finding any particular fish swimming in theschool is much smaller than its chance of finding at least one of the samegroup of fish if the fish were dispersed throughoutan area.
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