Evigtokite
钙铝氟石
🗣️ 情景例句
Do you have any sales experience?
你有销售经验吗？
Yes,I had breakfast two hours ago.
是,我2小时以前吃了早餐。
The secretary worked late into the night, preparing a long speech for the president.
秘书工作到深夜，为总统准备发言稿。