Humic substance
腐殖质
🧩 词语组成解析
a. 腐殖的
🗣️ 情景例句
The real discussion comes tomorrow.
明天才会正式商谈。
To examine the problem
检讨问题
for even though it was still summer, it rained continually and it was often bitterly cold.
因为即使那时仍为夏季，但雨总是下个不停，而且常常冷得厉害。