A primitive sequence that would always use an index to access the next element would incur the cost for walking the tree at every access.

一个原生的sequence使用索引访问下一个元素，这样可能导致每次访问的时候都需要遍历树。

youdao

A primitive sequence that would always use an index to access the next element would incur the cost for walking the tree at every access.

一个原生的sequence使用索引访问下一个元素，这样可能导致每次访问的时候都需要遍历树。

youdao