Elkonit
艾爾柯尼特合金
??? 情景例句
Calm down.
冷靜一點(diǎn)。
You were lucky to find it.
你的運(yùn)氣真好。
Just pencil in the changes and we'll retype it.
修改的地方請(qǐng)用鉛筆，我們會(huì)重打。