我已经尝试过Google Ads API，并使用它的Targeting Idea Service。
我运行official demo code，它运行良好。 结果如下：
Keyword with "space cruise 99f47fa6" text and average monthly search volume "5956924" was found with Products and Services categories: [18, 28, 10628, 39].
Keyword with "space cruise be08a87" text and average monthly search volume "4497071" was found with Products and Services categories: [16, 18, 10628, 21].
Keyword with "space cruise 7ba29dec" text and average monthly search volume "5486625" was found with Products and Services categories: [48, 60, 10628, 63].
我的问题是我不知道每个关键字文本（例如99f47fa6，be08a87或7ba29dec之后的哈希码的含义。
有文件解释吗？