Bilayer structure
[化] 双层结构
🧩 词语组成解析
[机] 双分子层
🗣️ 情景例句
Nothing ventured, nothing gained.
不入虎穴，焉得虎子。
How are you?
你好吗？
They must keep their hands behind their backs.
他们得一直将手放在背后。