Pfff
abbr. Plutonium Fuel Fabrication Facility 钚燃料制造局
🗣️ 情景例句
The patient showed a marked improvement.
病人病情显著好转。
Nothing comes from (or of) nothing.
无风不起浪。
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。