feel free (to do something)
US /fiːl friː (tə duː ˈsʌmθɪŋ)/
UK /fiːl friː (tə duː ˈsʌmθɪŋ)/

1.
随意, 尽管
used to tell someone that they are allowed or encouraged to do something
:
•
Please feel free to ask any questions.
请随意提问。
•
If you need help, feel free to call me.
如果你需要帮助,尽管给我打电话。