Viferral
吡啶与三氯甲醛聚合物
🗣️ 情景例句
The truth is ... yes.
老实说……是很难。
If you had gotten up earlier,you would have had time for breakfast.
如果你更早起床，你就有时间吃早餐了。
Did you have a good journey?
你旅途愉快吗？