Tones
n. 声调；基本音色（tone的复数）
🗣️ 情景例句
I will. See you later.
我会告诉她的。再见！
Suppose you couldn't go on the trip.How would you feel?
假定你不能继续你的旅行，你将感觉如何？
What was the population of the world in 1950?
1950年世界人口是多少？