Deltas
n. 希腊字母表中第四个字母( delta的名词复数 ); （河口的）三角洲
🗣️ 情景例句
I just retired. Had my own company.
我刚退休。我原来开一家公司。
May I ask you a question?
我可以问一个问题吗？
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。