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空洞物体内部的窟窿;坏死组织【医】cavity 生铁铸件中的空洞 hollow iron casting 肺中空洞 pulmonary cavity
无内容empty 空洞的议论 empty discussion 空洞的争论 hollow argument 空洞无物 devoid of substance 脱离实际的空洞理论 aimless theory unconnected with reality 提空洞的建议 offer a vacuous suggestion 计划空洞 plan has no substance 文章内容空洞。 This article is devoid of substance. 这家伙脑子里空空洞洞的。 This guy is totally vacuous.
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