send a signal by waving a flag or a light according to a certain code
signal by or as if by a flag or light waved according to a code
wigwags例句
Save the wigwags! Iconic wigwags survive after 80 years under Point Richmond's watchful eye RAIL-HIGHWAY GRADE CROSSING SAFETY EVALUATION Night Running Coil cut-out for wigwag signals HAPPILY EVER FASTER? Railway Regulation (Gauge) Act 1846 INFORMATION TECHNOLOGY AS A TOOL FOR STRATEGIC MANAGEMENT SECTOR IN THE CLOTHING DEPARTMENT Mr. Straw's Small Engine Repair Formation of dimeric σ-bonded argentacarboranes containing two types of closed and open Ag-H-B bridge bonds and molecular structure...
