For example, top-down parsers are guaranteed to find every possible production, but can be extremely slow because of frequence (exponention order) backtracking.

例如，top-down解析器可以确保找到每一个可能的产品，但可能会非常慢，因为要频繁地（指数级）进行回溯。

youdao

For example, top-down parsers are guaranteed to find every possible production, but can be extremely slow because of frequence (exponention order) backtracking.

例如，top-down解析器可以确保找到每一个可能的产品，但可能会非常慢，因为要频繁地（指数级）进行回溯。

youdao