Nitrolignin
硝化木素
🗣️ 情景例句
Now he's got his own trading company. Ann told me he made four million dollars last year.
现在他已有自己的贸易公司。安告诉我他去年赚了400万美元。
Are there reserved seats on the train?
车上有预订座位吗？
After working hard during the day I like to relax in the evening.
白天干了一天，晚上我要放松一下。