wistfully ['wɪstfəlɪ]

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附加级

adv. 渴望地，愁闷地

"If only I had known you then," he said wistfully. “要是我那时候认识你就好了，”他伤感地说。
He looked wistfully on the velvet carpet. 他如饥似渴地欣赏着丝绒地毯。