```python
import requests
import json
if __name__ == "__main__":
headers = {
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36 Edg/95.0.1020.40'
}
url = 'https://fanyi.baidu.com/'
word = input('enter a word:')
data = {
'kw': word
}
response = requests.post(url=url, data=data, headers=headers)
dic_obj = response.json()
filename = word + '.json'
fp = open(filename, 'w', encoding='utf-8')
json.dump(dic_obj, fp=fp, ensure_ascii=False)
print('over!')
```