diaphanous

她的解释很模糊，没能给我们提供任何实质性的信息。

Her explanation was ___diaphanous, providing no substantial information.

窗帘是用半透明的薄纱做的，阳光可以轻松透过。

The curtains were made of ___diaphanous chiffon, allowing sunlight to filter through easily.