短語詞組短語boundary y light 邊界燈international boundary flashing light signalling 國際閃光通話信號BO Boundary Light 邊界燈airport boundary light 航空站邊界燈BOL Boundary Light 跑道邊界燈international boundary number of light 國際航標(biāo)燈號碼Light boundary 起落區(qū)界線燈light absorption boundary blue shift 光吸收邊藍(lán)移 返回 boundary light