摘要

<正>“我”家后院的那棵黑胡桃树,向“我”揭示了树木对生态环境的重要性,加深了“我”对大自然的理解。主题语境:人与植物篇幅:323词建议用时:6分钟I’ve been in an 18-year love-hate relationship with a black walnut tree.