id	keyword
fbem-154	port
fbem-154	carbon
fbem-154	emissions
fbem-154	shanghai
fbem-154	fuel
fbem-154	consumption
fbem-154	carbon emission
fbem-154	year
fbem-154	energy
fbem-154	shanghai port
fbem-154	area
fbem-154	ship
fbem-154	measurement
fbem-154	tons