Collinite
凝胶煤素质; 无结构腐殖体
🗣️ 情景例句
Look in the real-estate section of Sunday's Times.
查一查星期天的 纽约时报 房地产版。
First think,and then speak.
动口先动脑。
Perhaps more than half a year.
大约半年多吧。