1，2 是對的，1 比2 更保守。3 是錯的，存在重複計算

來源: 江南一素子於 2024-10-06 15:27:28 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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