def METHOD_NAME(nc_group):
    """
    (obj) -> dict
    Return: Dimension info of a netcdf group object.
    """
    dimensions_info = OrderedDict()
    for dim_name, dim_obj in list(nc_group.dimensions.items()):
        try:
            if dim_obj.isunlimited():
                dimensions_info[dim_name] = 'UNLIMITED; // ({0} currently)'.format(len(dim_obj))
            else:
                dimensions_info[dim_name] = len(dim_obj)
        except: # noqa
            continue
    return dimensions_info