multi应该难一些，但如果只是代入公式计算就简单了，看老师怎么教。

来源: shawnma 于 2023-11-03 10:59:37 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.

Change Ad Consent