英文關鍵字
michigan
lake
coast
guard
cutter
city
mackinaw
navy
pier
illinois
chicago
skyscraper
travel
waterfront
outdoors
river
water
north
america
sky
tower
modern
building
exterior
business
people
urban
skyline
day
life
cityscape
blue
downtown
district
famous
place
office
street
midwest
usa
tourism
development
financial
built
structure
growth
summer
aerial
view
ship