Bredigite
白硅钙石
🗣️ 情景例句
He has a great enthusiasm for personal computers.
他热衷于个人电脑。
I want to welcome you all here for the fourth annual meeting of our Asian sales staff.
欢迎所有来参加我们亚洲推销员第四届年会的代表。
Speak louder，please.
说话请大声点儿。