例句與造句

1. the first theories about the possibility of creating a self-replicating program date back to 1949, and experimental viruses were first programmed and tested in the 1960s
   制造病毒的可能性始于1949年，試驗性病毒的程序于十九世紀六十年代寫出，并試運行。
2. It's difficult to find program date in a sentence. 用program date造句挺難的