Translation
no previous research Production 研究, 追究, 探讨, 做研究, 探究
no way of knowing Reception 知道, 了解, 认识
not addressed Production 写地址, 演说, 地址
not enough data Production 数据, 资料
not enough is known about Reception 知道, 了解, 认识
not well understood Production 了解, 理解, 默认, 听说
not yet resolved Reception 决定, 决心, 决意