Ichthyodont
鱼牙化石
🗣️ 情景例句
No ... thank you.
不……谢谢你。
Have you got any plans?
你有什么计划吗？
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。