Lactoscopy
乳脂测定法
🗣️ 情景例句
to serve the senior citizens
为Riverdale的老年人
Let us talk about it at our leisure.
那件事我们有空再谈吧。
Modern machines can make the copy bigger or smaller, lighter or darker and copy onto both sides of the paper.
代机器可以放大、缩小、制作较亮的或较暗的复印件，也可以在纸的两面复印。