帮忙翻译一个句子吧
The thirty-story buliding is one of the most challenging engineering projects they have ever undertaken.是什么意思啊
参考答案:这幢30层高的建筑是他们接手过的最具挑战性的工程之一。
The thirty-story buliding is one of the most challenging engineering projects they have ever undertaken.是什么意思啊
参考答案:这幢30层高的建筑是他们接手过的最具挑战性的工程之一。