当Spark Scala数据帧中的多列数组包含彼此对齐的数组时，如何分解这些列？

import org.apache.spark.sql.functions._

val df = spark.createDataFrame(Seq(
  (1, Array(1, 2, 3), Array("a", "b", "c")),
  (2, Array(4, 5), Array("d", "e"))
)).toDF("id", "numbers", "letters")

val exploded = df.select($"id", explode($"numbers").as("number"), explode($"letters").as("letter"))

exploded.show()

+---+------+------+
| id|number|letter|
+---+------+------+
|  1|     1|     a|
|  1|     2|     b|
|  1|     3|     c|
|  2|     4|     d|
|  2|     5|     e|
+---+------+------+