ubiquitous computing的用法和样例：
例句
- Context access control problem remains a major challenge in the security researches of pervasive computing.
上下文访问控制是普适计算安全中极具挑战性的重要问题。 - Pervasive computing aims to enable people to accomplish an increasing number of personal and professional transactions using a new class of intelligent and portable devices.
普适计算通过使用一类新的智能与便携式设备使人们能完成日益增长的许多个人和专业的事务。
