on the one hand ... on the other hand, on the one hand ... on the other, on one hand ... on the other hand, on one hand ... on the otheradvadverb: Describes a verb, adjective, adverb, or clause--for example, "come quickly," "very rare," "happening now," "fall down."
figurative (comparing points of view)
一方面…另一方面
On the one hand, it would be quicker to fly to Manchester; on the other, it would be more expensive than the train.