Opticalmechnical
光学机械
🗣️ 情景例句
But with only one more year to go, you would be well-advised to finish.
可是只剩下一年了，你要是明智的话就应该学完。
Jesus freak
基督狂
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？