撞上; 打进; 偶然碰到（某人）; 非正把…灌输给

1. 撞倒：37.do exercises做练习,锻炼; | 38.knock into撞倒; | 39.lose one's voice失音;

2. 撞上(某人)：13. flying disk 飞碟 | 14. knock into 撞上(某人) | 15. fall down 倒下;摔倒

3. 撞到：be buried in被埋葬在... | knock into撞到... | think it funny to...觉得滑稽...