sensor nods的用法和樣例：
例句
- Because sensor nodes are often deposed in hostile areas, the keys and security algorithms can be understood by the enemies.So the key management has became the focus of research.
摘要傳感器節點(diǎn)往往被部署在可被捕獲的敵對區域，其中的密鑰及安全算法可被敵人知曉，所以如何進(jìn)行密鑰管理成為了研究焦點(diǎn)。
