Heliozincograph
摄影制锌版
🗣️ 情景例句
Yes, Philip.
什么事 ，Philip？
Do you usually do arithmetic on Sunday?
你通常在星期日做算术吗？
The leader of the party was examining the soil near the entrance to the cave when the machine showed that there was gold under the ground.
当这个队的队长正在检查洞口附近的土壤时，那台机器显示出它的下面埋有金子。