Sapropel
[地质]湖泥(腐殖质), 腐殖泥
🔁 扩展释义
【化】 腐泥; 腐泥煤
🗣️ 情景例句
about our children's education.
对于我们孩子的教育。
Mmm!
嘿嘿！
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。