◎ 大而无当 dà érwúdàng[be big but inappropriate;be large but burdensome] 虽然很大,但不适用。也说“大而不当”-----------------国语辞典:形容言语过分夸张而不著边际。语出《庄子.逍遥游》:「吾闻言于接舆,大而无当,往而不反;吾惊怖其言,犹河汉而无极也。」后引申形容东西过大而不切实用。如:「布置家居,宜妥善计划,免得添购了大而无当的东西,徒增浪费。」英语 grandiose but impractical (idiom), large but of no real use法语 (expr. idiom.) grandiose mais peu pratique, grand mais d'aucune utilité réelle
◎ 大口 dàkǒu(1) [big mouth]∶大嘴(2) [boast]∶大话(3) [adult member of a household]∶户口中的成年人-----------------国语辞典:大嘴。《三国演义.第二九回》:「孙权生得方颐大口,碧眼紫髯。」张大嘴巴。《红楼梦.第二○回》:「凭他怎么去,还有太太老爷管他呢,就大口啐他!」英语 big mouthful (of food, drink, smoke etc), open mouth, gulping, gobbling, gaping法语 à pleine bouche, grande bouchée, la bouche ouverte, avaler, engloutir, béant