xiànxìngdàishù
ㄒㄧㄢˋ ㄒㄧㄥˋ ㄉㄞˋ ㄕㄨˋ
Simplified 线性代数
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 線性代數 and it comes back until you know it.