七、請就圖例之說明文字,加以翻譯
PRESENT MOVEMENT: 270/09 KT
SOLID LINE - FORECAST TRACK
DASHED LINE - HISTORY TRACK
RED - 64-KT RADIUS
YELLOW - 50-KT RADIUS
GREEN - 34-KT RADIUS
該輪16/00Z時開航,依照正常航路,18/00Z時與颱風中心距離,約為多少海浬?