existing structure的用法和樣例：
例句
- The scheme is open to all types of new and existing buildings which meet the requirements of the energy codes.
上述計劃公開予所有符合能源效益守則的新落成及現有建築物申請參加。 - This SUPER STOL dynamics performance characteristic will allow for special VEER-LEV aircrafts to be built on top of existing buildings as totally new VERT LEV airports.
這種超短距起落動力學性能特點將允許特殊轉向低尾氣排放的飛機將於現有建築物之上的全新的垂直輕型電動車機場。
