向某人反覆灌輸;對某人反覆講述
drum sth into sb
to make sb remember sth by repeating it a lot of times
We had it drummed into us that we should never talk to strangers.我們曾被反覆叮囑千萬不要與陌生人講話。
釋義來自《牛津高階英漢雙解詞典》第 9 版