helis is heli's Plural Form

heli

Plural Form：helis

E-E

n.	1. a rotary-wing aircraft

Definition:

AllAll,直升机直升机

Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical

Source:AllAll,DictionaryDictionary,WebWeb

Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard

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China petroleum company will buy helis ! China oil group will buy Helis !