Communications System User的用法和樣例：
例句
- This system user must first carry on the debarkation, then uses the system to carry on the communication again.
該系統用戶首先要進行登陸，然後再使用系統進行信息交流。 - It is impossible to design appropriate behaviors for a system without understanding the users of the system in specific detail.
未詳細理解系統用戶的具體細節，就不可能設計系統的合適行為。
