Vocabulary consisting only from characters you are able to read
開発
かいはつ
development, exploitationsuru
文明
ぶんめい
(1)civilization, civilisation, culture, (2)Bummei era (1469.4.28-1487.7.20) mix
この度
このたび
this occasion, at this time, nowmix
試作機
しさくき
prototype (e.g. plane)mix