Diffractogram
衍射图(样)
🗣️ 情景例句
That's all right. I hope we can help you at some other time. Good-bye.
好了，希望我们今后还能给你帮助。再见。
May I help you?
要我帮忙吗？
A week? As long as that?
一星期？要那么长时间？