听众王司宇想知道 “a lot of、plenty of、amount、number” 和 “quantity” 的用法区别。这五个搭配和词汇都能用来限定事物的数量。它们当中有的只能修饰可数名词，有的只能修饰不可数名词。除了在修饰名词上的区别外，在使用中，它们的用法还有哪些区别？

The number of large families in Russia increased from 2.4 million in January 2024 to 2.65 million in January 2025, according to the country's ministry of labor and social protection. Russia has ...