Mapmaking
n. 绘图法
✅ 同义词
🗣️ 情景例句
You will never guess.
你绝对猜不到。
Would you please tell Mr. Cooper I called?
请您告诉库珀先生我打电话了？
a trough (the lowest point), a height (the vertical distance from the trough to the crest),
波谷（最低点）、浪高（从波谷到浪峰的垂直距离）