LEARNit Dictionary

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adjective
A1
OPAL
OPAL
1
being the largest or most important of its kind
اصلی, مهمترین, عمده, کلیدی, مرکزی, اساسی, محوری
noun
1
a large pipe that carries water or gas to a building; a large cable that carries electricity to a building
لوله اصلی, خط اصلی, کابل اصلی
see also ring main, rising main, water main
2
a large pipe that carries waste water and sewage (= human waste, etc.) away from a building
لوله اصلی, کانال فاضلاب, لوله فاضلاب
3
the place where the supply of water, gas or electricity to a building or an area starts; the system of providing gas, water and electricity to a building or of carrying it away from a building
لوله اصلی, شبکه اصلی, خط اصلی, سیستم توزیع, شبکه مرکزی, خط لوله اصلی
The house is not yet connected to the mains.
The electricity supply has been cut off at the mains.
Plug the transformer into the mains .
mains gas/water/electricity
The shaver will run off batteries or mains.
mains drainage