Topograph
n. (显示晶体等物体表面特征的)X射线物相照片
🗣️ 情景例句
The pay is better and the work is much more interesting.
薪水很高，工作也更有意思。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。