Periodogram
[计] 周期图
🗣️ 情景例句
You need some rest to help you get better quickly.
需要多休息， 好让你很快恢复。
I'm afraid you're being too particular about your food.
我害怕你太讲究你的食物。
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？