如果我假设您当前的投影是WGS84,则将您的几何临时转换为公制投影(例如UTM),请尝试以下语句
transform (buffer (transform (B.geometry, #projection), #dist), 4326))
-in #projection:您的新投影,例如:WGS 84 / UTM区域31N的32631(选择适合您区域的投影)
-in #dist:以米为单位的距离
(WGS84为4326)

如果我假设您当前的投影是WGS84,则将您的几何临时转换为公制投影(例如UTM),请尝试以下语句
transform (buffer (transform (B.geometry, #projection), #dist), 4326))
-in #projection:您的新投影,例如:WGS 84 / UTM区域31N的32631(选择适合您区域的投影)
-in #dist:以米为单位的距离
(WGS84为4326)