Obviously, the main reason sequences are useful is that it's easy to access the items in the sequence.

很明显，序列较为有用的主要原因是它可以非常方便地访问序列中的条目。

youdao

If you remember from the tuple discussion, you can access items from a sequence one item at a time or by slicing items.

如果还记得对tuple的讨论，便知道可以在序列中一次访问一个条目或者通过将条目切片来访问条目。

youdao

The sequence of events to access an internal service (that is, an se) is shown in Figure 6.

访问内部服务(即，SE)的事件序列如图6所示。

youdao

DNA-sequence data in public databases acknowledges that progress is dependent on access.

ECONOMIST: Letters

Instead, Celera's business plan involves selling access to the technologies it has developed in order to use the gene sequence.

FORBES: Celera's worth still up in the air