解释一下“fall into”释义用法，有点例句更好！

If you fall into conversation or a discussion with someone, usually someone you have just met, you start having a conversation or discussion with them.

• fall into sth 可以分为；能够分成
  
• fall into sb's hands/the hands of sb 受制于某人；被某人控制
  
• bring sb/sth, come, get, fall, etc. into line (with sb/sth) 使一致；使规范；使符合；（和…）一致
  
• fall/slot into place 明朗化；清晰；理出头绪
  
• fall into step (beside/with sb) （和某人）合上步伐，步调一致起来
  
• to fall into/avoid the trap of doing sth 掉进／避免掉进陷阱
  
• fall into contempt 受人轻视
  
• fall into disuse 废而不用
  
• fall into place 逐渐被理解