Potin
铜锌锡合金
🗣️ 情景例句
Where is your hometown?
你的籍贯是哪里？
My Biochem lectures are in the morning, and the labs are in the afternoon.
生物化学的课安排在上午，实验在下午。
I was proud that we had come across something that was completely unknown and valuable and,
让我感到自豪的是，我们在无意中发现了不为世人所知的、有价值的东西，