Large building panels up to 12m in long, 3m high and 120mm thick with hollow cavities are manufactured without adverse impact on the environment.是什么意思_Large building panels up to 12m in long, 3m high and 120mm thick with hollow cavities are manufactured without adverse impact on the environment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句