Diffusion barrier
[化] 扩散膜
🧩 词语组成解析
🗣️ 情景例句
Oh, I don't know.
噢，这个我就不知道啦。
You don't have to pay any duty on personal belongings.
你不必在个人财产上付任何税。
The police had a difficult time, but they were most amused.
警察虽然吃了苦头，但他们还是感到很有趣。