directional
🇬🇧/dəˈrekʃənl; daɪˈrekʃənl/ 🇺🇸/dəˈrekʃənlˌdaɪˈrekʃənl/adjective [原级] 方向的
Unless he was equipped with a directional microphone, he was out of earshot. 除非给他配备一个定向扬声器,否则谁也听不见他。
noun [具体名词] 定向型的
Jets of compressed air gave the aircraft lateral and directional stability. 压缩气体喷流从侧面和正面稳定了机身。