So can the movement of aphids when, having depleted the young leaves on one food plant, their offspring then fly onward to a different host plant, with no one aphid ever returning to where it started.
蚜虫的运动也是如此，当吃完一株食用植物的幼叶，它们的后代会飞到另一株宿主植物上，没有蚜虫会再回到最初的地方。
History moves ever onward, never stopping to wait for the hesitant, the undecided, the idle, and the weak.
历史总是要前进的，历史从不等待一切犹豫者、观望者、懈怠者、软弱者。
Ever singing, march we onward.
不住前进，不断歌呤。
Ever singing, march we onward.
不住前进，不断歌呤。
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