Aggregat
集料
🗣️ 情景例句
Does your wife work?
你太太工作吗？
Which is your bag?
哪个是你的包？
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。