Observational error
[计] 观察误差
🧩 词语组成解析
a. 观察的, 观测的\\n[计] 观察的
🗣️ 情景例句
What's the tuition for one year of college?
大学一年的学费是多少？
Take one's courage in both hands.
勇往直前，敢作敢为。
They have nothing to eat.
他们没有东西吃。