drainage [i dr3inid[ ]    (¼øÀ§: 10718 - ´ëÇÐ ¼öÁØ)  
¶æ ¸í) ¹è¼ö, ¹è¼öÀåÄ¡
Mean The action or a method of draining.
¿¹¹® 1. drainage work (¹è¼ö °ø»ç)
¡¡