Serpex
塞佩克斯碱性耐火材料
🗣️ 情景例句
Hello, Joanne. Nice to meet you.
好， Joanne。很高兴见到 。
Rest breeds rust.
停止须生锈。
Just now we all watched you sign to show that you had received the cheque.
刚才我们大家都观察到了你为表明已收到那张支票而签名。