embed model的用法和樣例：
例句
- The hub and spoke model for packaging and deploying resources uses a fallback process to locate appropriate resources.
用于打包和部署資源的輪輻式模型使用后備進程來定位合適的資源。 - The usual manifest model forces her not only to be aware of every intermediate step but to reverse each of them, in turn.
通常的顯式模型迫使用戶不僅要意識到每一個步驟，而且要依次恢復每一個動作。
