Definition
to make someone understand something, especially when they have been told many times before and the speaker is annoyed
（尤指多次告知後仍不理解時，惱怒地說）使某人理解某事
I don't know how to get it into your thick head that you can't use your phone during meetings!
我不知道該怎麼讓你明白，會議期間不能使用手機！
You need to get it into your thick head that I'm not changing my mind; just give up already!
你需要明白我是不會改變主意的，還是放棄吧！
I’ve been trying to get it into his thick head that the report needs to be submitted on time, but he doesn’t seem to listen.
我一直試著讓他明白報告需要按時提交，但他似乎聽不進去。