This is the 675th most frequent Chinese word.
祖国
Motherland; homeland.
In this sentence, '祖国' signifies the country we belong to, emphasizing the collective duty to contribute to its development.
我们要为建设祖国而努力学习。
We must study hard to contribute to the building of our motherland.
'祖国' in this context highlights a sense of identity and homesickness felt by the speaker when away from their homeland.
无论身处何方，我都时刻怀念着我的祖国。
Wherever I am, I always miss my motherland.
'祖国' here refers to the speaker's country being compared to a nurturing mother, expressing patriotism and deep emotional connection.