Trigonometer
n. 三角形计算工具, 三角学家
🗣️ 情景例句
I guess I ruined your day.
我想我扫了你今天的兴。
How much is a round-trip ticket to Beijing?
一张到北京的来回票要多少钱？
The letter x stands for an unknown number.
字母x代表未知数。