只有箭头，是用乳状的蓝宝石雕刻的，发出一些色泽。
Only the arrowhead, carved from some milky blue stone, had any color.
只有箭头，是用乳状的蓝宝石雕刻的，发出一些色泽。
Only the arrow head, carved from some milky blue stone, had any color.
最后，注意序列中的最后一个节点只有一个标记，而不是一个箭头。
Finally, notice that the last node in the sequence simply has a mark instead of an arrow.
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