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。
Stray bird of summer come to my window to sing and fly away. And yellow leaves of autumn, which have on songs, flutter and fall there with a sigh.
夏日里迷路的鸟儿来到我的窗前轻吟须臾悄然离去，秋天里的黄叶们无歌可吟轻叹一声无声飘落。
Purple Butterfly has three leaves, wind up, like a purple butterfly in the sky on the fly. Was very beautiful.
紫蝴蝶的叶子有三瓣，风吹起来，就像一只紫色的蝴蝶在天空上飞翔。很是漂亮。
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