大家好

在globe gl 中的例子是拿geojson 作data, 請問裡面的bbox是代表什麼, 謝謝.

"type": "Feature",
  "properties": {
    "scalerank": 1,
    "featurecla": "Admin-0 country",
    "LABELRANK": 2,
    "SOVEREIGNT": "China",
    "SOV_A3": "CH1",
    "ADM0_DIF": 1,
    "LEVEL": 2,
    "TYPE": "Country",
    "ADMIN": "China",
    "ADM0_A3": "CHN",
    "GEOU_DIF": 0,
    "GEOUNIT": "China",
    "GU_A3": "CHN",
    "SU_DIF": 0,
    "SUBUNIT": "China",
    "SU_A3": "CHN",
    "BRK_DIFF": 0,
    "NAME": "China",
    "NAME_LONG": "China",
    "BRK_A3": "CHN",
    "BRK_NAME": "China",
    "ABBREV": "China",
    "POSTAL": "CN",
    "FORMAL_EN": "People\u0027s Republic of China",
    "NAME_CIAWF": "China",
    "NAME_SORT": "China",
    "MAPCOLOR7": 4,
    "MAPCOLOR8": 4,
    "MAPCOLOR9": 4,
    "MAPCOLOR13": 3,
    "POP_EST": 1379302771,
    "POP_RANK": 18,
    "GDP_MD_EST": 21140000,
    "POP_YEAR": 2017,
    "LASTCENSUS": 2010,
    "GDP_YEAR": 2016,
    "ECONOMY": "3. Emerging region: BRIC",
    "INCOME_GRP": "3. Upper middle income",
    "WIKIPEDIA": -99,
    "FIPS_10_": "CH",
    "ISO_A2": "CN",
    "ISO_A3": "CHN",
    "ISO_A3_EH": "CHN",
    "ISO_N3": "156",
    "UN_A3": "156",
    "WB_A2": "CN",
    "WB_A3": "CHN",
    "WOE_ID": 23424781,
    "WOE_ID_EH": 23424781,
    "WOE_NOTE": "Exact WOE match as country",
    "ADM0_A3_IS": "CHN",
    "ADM0_A3_US": "CHN",
    "ADM0_A3_UN": -99,
    "ADM0_A3_WB": -99,
    "CONTINENT": "Asia",
    "REGION_UN": "Asia",
    "SUBREGION": "Eastern Asia",
    "REGION_WB": "East Asia \u0026 Pacific",
    "NAME_LEN": 5,
    "LONG_LEN": 5,
    "ABBREV_LEN": 5,
    "TINY": -99,
    "HOMEPART": 1,
    "MIN_ZOOM": 0,
    "MIN_LABEL": 1.7,
    "MAX_LABEL": 5.7
  },
  "bbox": [
    73.675379,
    18.197701,
    135.026311,
    53.4588
  ],