英文關鍵字
barrier
closed
coast
construction
dam
delta
dikes
docks
eastern
engineering
flood
movements
netherlands
pillars
protection
schelde
security
shore
steel
storm
tidal
works
zeeland
英文關鍵字
barrier
closed
coast
construction
dam
delta
dikes
docks
eastern
engineering
flood
movements
netherlands
pillars
protection
schelde
security
shore
steel
storm
tidal
works
zeeland