How to understand the meaning of "hoarseness" in the sentence "I should also sing with a hoarse throat" in Ai Qing's I Love This Land?

The words "Ye", "hoarse" and "singing" in the sentence "I also want to sing with a hoarse voice" can be re-read, which can highlight the tragic atmosphere of the times in the early days of the Anti-Japanese War and reveal the special temperament and personality of the "sad poet" (the poet claims to be a bird): even if he becomes a bird, he will not change his persistent love for the motherland, and even if his throat is hoarse, he will stay here until his death.