extention的例句（extention在句子中的用法）

• Please dial the extention number or zero for the operator. 请直拔分机号码或拔零,由总机为您服务.
• So the extention is mainly for transmission and control. 所以扩展主要是基于传输和控制.
• Burns of the anterior aspect of the neck should be positioned with the neck in extention. 颈前烧伤时,应置颈部于伸位.