that simply cannot survive without it. 没有淡水 便无法生存
is simply not enough for both of them. 根本不足以满足这对母子的需要
They're simply too huge to be scared of lions. 他们仗着身形庞大 并不惧怕狮子
The trick is simply knowing how to reach it. 诀窍在于如何获取水分
There is simply not enough prey to sustain more. 只是因为猎物数量不足以维系更多的生命
A dumbo octopus simply flaps a fin 小飞象章鱼拍打翅膀来游泳
It may simply be a chance for some extra protein. 也可能是为了获得额外的蛋白质吧
When an ant falls in, the spider simply waits for it to drown 蚂蚁掉到陷阱里了 蟹蜘蛛静静等它淹死
Sometimes one mouth simply isn't enough. 有时候 一张嘴根本就不够