英文论文写作常用词汇
通常在叙述了前人成果之后，用However来引导不足，比如
However, little information...
little attention has been devoted to…
little work...
little data / little research
or few studies / investigations / few attempts have been don on…
or none of these studies
has (have) been less
done on ... / focused on / attempted to
conducted / investigated / studied
(with respect to)
OR To the author's knowledge... There is little
information available in literature about...
Until recently, there is some lack of knowledge about... Previous research (studies, records) has (have)
failed to consider
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