Translation
few studies have
have to find a way to Reception 发现, 找到, 感到, 裁决
inconsistent
lack of adequate Reception 足够的, 能满足需要的
leading cause of
limited understanding Production 了解, 理解, 默认, 听说
little evidence is available
major issue Production 问题, （报刊的）期, 号, 发行, 发布, 流出
much less is known Reception 知道, 了解, 认识
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
one of the problems Production 问题, 疑难问题
only partially understood Production 了解, 理解, 默认, 听说
only the first step Reception 踏, 踩, 走, 步, 脚步, 步骤, 手段, 步调
part of the problem Production 问题, 疑难问题
paucity of research Production 研究, 追究, 探讨, 做研究, 探究
problem can be seen as Production 问题, 疑难问题
problem is that Production 问题, 疑难问题
problem of how to Production 问题, 疑难问题
problem remains Production 问题, 疑难问题
problems can be seen Production 问题, 疑难问题
problems remain Production 问题, 疑难问题
remain unclear Reception 澄清, 清除障碍, 变清澈, 清澈的, 洁净的, 晴朗的
remain unresolved Reception 决定, 决心, 决意
require clarification 澄清, 阐明
research is needed Production 研究, 追究, 探讨, 做研究, 探究
still far from clear Reception 澄清, 清除障碍, 变清澈, 清澈的, 洁净的, 晴朗的
still lack Production 缺乏, 不足, 没有, 缺少的东西, 缺少, 需要的东西
still not completely understood Production 了解, 理解, 默认, 听说
still requires additional Production 要求, 需要, 想要
there has been very little Production 微少的, 少到几乎没有的, 小的, 琐碎的, 娇小的, 幼小的, 少
urgent need 需要, 必须, 需要的东西