| 释义 |
DEFINITIVE EXAMPLES 权威例句〔base〕The surgeon placed catheters through the veins and arteries near the base of the head.外科医生在脑根部的静脉和动脉中放置了导管。柯林斯高阶〔indwelling〕Indwelling catheters are used during labour following epidural anaesthesia.产妇生产时，可以在硬膜外麻醉之后使用留置导管。剑桥高阶 |