Thank you.
I figured it out, and I get the content that I want.
import streamlit as st
import requests
import json
danci = st.text_input("请输入要查找的单词")
fanhui = requests.get("http://dict.iciba.com/dictionary/word/suggestion?word="+danci)
data1 = fanhui.text
data2 = json.loads(data1)
for i in range(len(data2["message"])):
st.write(data2["message"][i]["key"],data2["message"][i]["paraphrase"])