diaphanous
adjective literary uk/daɪˈæf.ən.əs/ us/daɪˈæf.ən.əs/
(尤指布料)又透又薄的,薄如蝉翼的
A diaphanous substance, especially cloth, is so delicate and thin that you can see through it.
a diaphanous silk veil 透明丝绸面纱
Synonyms: filmygossamer sheer transparent