Metalloporphyrin
金属卟啉
🗣️ 情景例句
Yes, I'm serious.
是的，我是真心的。
You've already quoted a price of $ 800 per 1,000. Is there a discount for larger orders?
你报的价是每1000个要美金800元，如大量订购有折扣吗？
By 1840 about 2,000 Europeans, mainly British, had come to settle in New Zealand and the Maori signed an agreement with these settlers.
截止1840年已有约2，000名欧洲人，其中大部分是英国人，到新西兰定居，毛利人与这些移居者签订了一个协议。