[null,null,["上次更新時間:2025-08-17 (世界標準時間)。"],[],["User IDs are unique identifiers assigned to users to track their behavior across sessions, devices, and platforms within Google Analytics. To ensure data accuracy, avoid using user IDs for custom dimensions and only send them when users are signed in; do not set placeholder values. Before sending user IDs, establish a Google Analytics account and web data stream, and ensure the Editor role is assigned.\n"],null,[]]