释义 adj.薄弱的；不坚固的；无实质的 实用短语unsubstantial dream空幻的梦unsubstantial link薄弱环节unsubstantial memory飘渺的记忆flimsy or unsubstantial脆弱的unsubstantial a无实体的unsubstantial big mouth飘渺的大嘴unsubstantial and strange虚空而诡奇dotty feeble unsubstantial薄弱的comparatively unsubstantial link相对薄弱的环节 同义词romantic / intangible / aerial / null / windy