Nitrocolors
含硝基生色料团化合物
🗣️ 情景例句
I didn't realize how late is was.
我不知道已经这么晚了。
Newspapers inform us of daily events.
报纸把每天发生的事都告诉了我们。
Byrd at once ordered his men to throw out two heavy food sacks.
伯德马上命令他的助手们把两个沉重的食物袋扔掉，