英文關鍵字
airwaves
antenna
axial
axialsymmetric
blue
cable
castle
clouds
coaxial
communicate
communications
composed
courtyard
digital
dish
disk
disks
gray
images
inscription
medieval
multiple
network
outdoors
parabola
parabolic
receiving
red
rotate
rotating
sat
satellite
satellites
sattelie
service
services
signal
sky
stone
symmetric
technology
telecommunications
television
text
tower
view
walls
wireless