英语翻译:直到那时我才意识到自己犯了一个严重的错误(强调句)
not until i realized i had made a big mistake at that time It was not until then that I realized I had made a serious mistake. Until that time had I realized I have make a serious mistake It wasn't until that time that I realized that I had made a serious mistake. It was not until then that I realized I had made a huge mistake.