vastnessKK [ˋvæstnəs] /ˈvæstnəs/發音名詞1遼闊、廣闊、浩瀚Standing on the shore, we felt the vastness of the ocean.站在岸邊,我們感受到海洋的遼闊。2龐大、巨大The vastness of the project made planning extremely difficult.這個專案規模龐大,使得規劃格外困難。