螺纹末端形成的沟槽渐浅部分称为螺尾。
炸尾螺是海格于1994年的秋天在霍格沃茨培育出来的一种奇特的生物，它是由人头狮身蝎尾兽和火螃蟹杂交得到的。
The Blast-Ended Skrewt is a stange hybrid creature bred by Hagrid at Hogwarts in the fall of 1994 by crossing manticores and fire-crabs.
想到少年时期的邓布利多，总使人感觉很怪异，就好像要想象一个头脑迟钝的赫敏，或想象一只待人友善的炸尾螺。
The idea of a teenage Dumbledore was simply odd, like trying to imagine a stupid Hermione or a friendly Blast-Ended Skrewt.
更糟糕的是，罗恩似乎一夜之间变得像炸尾螺一样敏感易怒，一碰就炸。
What was more, Ron seemed to have become, overnight, as touchy and ready to lash out as the average Blast-Ended Skrewt.
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