as needed

US /æz ˈniːdɪd/
UK /æz ˈniːdɪd/
"as needed" picture
1.

根據需要, 必要時

when or where necessary; as required.

:
Add water as needed to the mixture.
根據需要向混合物中加水。
The nurse will change the dressing as needed.
護士會根據需要更換敷料。