Google Earth Engine（GEE）——landsat 8 去云一个简单的ui.select()结果

代码：

var biome_labels = ee.ImageCollection("users/gonzmg88/LANDSAT8_CLOUDS"),
    l8 = ee.ImageCollection("LANDSAT/LC08/C01/T1_TOA");
Map.setCenter(0,0,3);

//这里将矢量设定一个颜色
var geoms = biome_labels.map(function(img){
  return ee.Feature(img.geometry(),{"style":{"color": "FF0000",
                                             "fillColor":"00000000"}});
});
Map.addLayer(geoms.style({styleProperty: "style"}),{},'geom');

//将影像的时间设定按照小时为单位
var get_l8_img = function(img){
  var time = ee.Date(img.get("system:time_start"));
  var time_start =