2023年1月号-エイゴパス-月刊ニュースレター
2023-02-03 | No Comment
Newsletter Template Current News Video News Business Englsih TOEIC Quiz Monthly Column World News Researchers dig up secrets of Roman concrete The ancient Romans were brilliant engineers and builders, creating a dazzling array of magnificent structures. Many of these have endured for two millennia while modern concrete counterparts sometimes crumble in mere years or decades. […]
