Xanthoxenite
黄磷铁钙矿
🗣️ 情景例句
I could probably tell what it requires to fix it up.
我大致能说出修复它需要些什么。
Art is long, but lift is short.
人生有涯，而学无涯。
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。