Denivellation
不平度
🗣️ 情景例句
Don't cross that bridge till you come to it.
没到河边，先别操心怎么过桥。
What position do you play?
你踢什么位置？
The aircraft was able to fly over the endless white plains without difficulty.
飞机可以毫无困难地飞过这片茫茫无际的白色原野！