Meanwhile the teacher continued to meditate without fear. After a little while, the tiger gradually lowered its head and tail and went away.
而老师却继续毫不害怕地自我思考着。没多久，老虎渐渐低下它的头，走开了。
Henry puzzled over the figures for hours without making head or tail of it.
这些数字亨利苦苦地算了好几个钟头，还是摸不着头脑。
He had puzzled over the figures for hours without making head or tail of them.
这些数字他苦苦算了好几个钟头，还是摸不着头脑。
There are only discussions about arithmetic creation of simply linked list from tail to head without that from head to tail.
许多《数据结构》教材只讨论了从表尾到表头逆向生成单链表的算法，而没有讨论从表头到表尾正向生成单链表的算法。
There are only discussions about arithmetic creation of simply linked list from tail to head without that from head to tail.
许多《数据结构》教材只讨论了从表尾到表头逆向生成单链表的算法，而没有讨论从表头到表尾正向生成单链表的算法。
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