a. 〔玻璃或液体〕不透明的 ≠ transparent
a. 难懂的,隐晦的,晦涩的 ≈ obscure
an opaque style of writing 晦涩的写作风格
The jargon in his talk was opaque to me. 他谈话中使用的行话对我是一团迷雾。
BrE /əˌbriːviˈeɪʃn/