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Pronunciation varies by accent · noun
Any rail technology where vehicles use on-board hydrogen as a source of energy to power the motors..
Use hydrail when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hydrail means Any rail technology where vehicles use on-board hydrogen as a source of energy to power the motors..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hydrail where its definition matches the intended context.
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