source part的用法和樣例：
例句
- This is the hardest part of ontology development.
這也是在本體開發過程中最為困難的工作。 - The actress represented a part of Aimee herself, indicating how the identity of a human being could include elements well outside the biological boundaries of the body.
女演員代表了埃梅的一部分，這說明，人的本體如何可以包括那些存在於身體的生物界限以外的因素。
