I stick to what I said yesterday.我坚持我昨天所说过的话。
Stick to 还表示“坚持干某事”；“忠于；保持好关系”等。例如：
No matter what happens,Fred always sticks to his friends.无论发生什么事，弗雷德都忠于朋友。
I’ll stick to you through thick and thin.我将和你同甘苦，共患难。