Revalon
一種銅鋅合金
??? 情景例句
Nice chatting with you.
和你聊得很愉快。
What are you writing?
你正在寫什么？
Mr Hu stood at the starting line. All the runners got ready to run.
胡先生站在起跑線上。所有的運動員都做好了起跑準備。