英文關鍵字
2021
agricultural
bridge
cement
central
compress
concrete
conservancy
construction
control
crisis
dam
disaster
electricity
engineering
environmental
falling
flood
floodgate
flow
flowing
force
generation
generator
infrastructure
iron
irrigation
management
motion
open
outdoor
overflowing
pattern
pouring
power
powerful
rapids
regulate
residential
river
rush
sanitation
situation
sluice
spillway
station
stream
strength
structure
sunk
system
thailand
underwater
water