“引进的”用英语怎么说

在他们最近引进的东西里面有两样给我留下了非常深刻的印象。There are two among their recent introductions that have greatly impressed me.我们1980年引进的系统有了很大改进。The system we introduced in 1980 has been a great improvement.这台机器是在1960年被试验性地引进的.This machine ...