错误：
Line 29: Unrecognized arguments (region) to function: Image.reduceRegion(image, reducer, geometry, scale, crs, crsTransform, bestEffort, maxPixels, tileScale) Apply a reducer to all the pixels in a specific region. Either the reducer must have the same number of inputs as the input image has bands, or it must have a single input and will be repeated for each band. Returns a dictionary of the reducer's outputs. Args: image (Image): The image to reduce. reducer (Reducer): The reducer to apply. geometry (Geometry, optional): The region over which to reduce data. Defaults to the footprint of the image's first band. scale (Float, optional): A nominal scale in meters of the projection to work in. crs (Projection, optional): The projection to work in. If unspecified, the projection of the image's first band is used. If specified in addition to scale, rescaled to the specified scale. crsTransform (List, optional): The list of CRS transform values. This is a ro