If the context item is undefined, you have no way to select nodes from the document.

如果上下文item未定义，您就无法从文档中选择节点。

youdao

The second argument to subsequence is the starting position; the dot represents the context item.

subsequence的第二个参数是开始位置，点号表示上下文项。

youdao

This version of evaluate takes a context item, as is normal, but does not require a return type, and it seems to return a string.

这个版本的evaluate也需要上下文参数，但是不需要返回类型，它似乎返回一个字符串。

youdao

The context is how you are interacting on the item itself.

FORBES: Modeling Enterprise Social Business Processes

Descriptions of each item and videos, with expert curators speaking about selected items, provide context for users, and are intended to spark curiosity and encourage both students and the general public to learn more about the cultural heritage of all countries.

UNESCO: Communication and Information