Siderography
n. 钢凹板雕刻术
🗣️ 情景例句
You work hard on all your committees,
而你总是在各种委员会里忙，
I'm sure I'll be President.
我必定会当选总统。
Has your company done any research in this field?
请问贵公司对此范畴做了任何研究吗？