Amorphous carbon
[化] 无定形碳
🧩 词语组成解析
🗣️ 情景例句
He was left in charge of the shop while the manager was away.
经理不在时他负责这个商店。
Excuse me I couldn't come.
对不起我不能来。
He was obviously very nervous and for some minutes stood awkwardly before the microphone.
他显然非常紧张，局促不安地在麦克风前站了好几分钟。