Nigrifies
vt. 使…成黑色；变黑
🗣️ 情景例句
Thanks. Could you point me in the right direction?
谢谢。您能告诉我要往哪里走吗？
This area is noted for its rich soil.
这个地区以土壤肥沃着称。
and realized that it was a sign that the child was growing up and developing valuable powers of observation and independent judgment,
并且意识到这象征着孩子们正在成熟和发展宝贵的观察力、独立判断力，