as needed
US /æz ˈniːdɪd/
UK /æz ˈniːdɪd/

1.
必要に応じて, 必要であれば
when or where necessary; as required.
:
•
Add water as needed to the mixture.
必要に応じて水を加えてください。
•
The nurse will change the dressing as needed.
看護師は必要に応じて包帯を交換します。
必要に応じて, 必要であれば
when or where necessary; as required.