Sciography
投影法
🗣️ 情景例句
We stuff them.
我们装传单。
If you have any questions on the details， feel free to ask.
如果对某些细节有意见的话，请提出来。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。