n.
an unforeseen or unexpected or surprising difficulty
同义词：booby trap
a trap in the form of a concealed hole
同义词：pit
Pitfalls and protocols in DEA
Quantitative RT-PCR: pitfalls and potential
Avoiding Pitfalls When Using Information-Theoretic Methods
Pitfalls and Opportunities: What Macroeconomists Should Know about Unit Roots
The promises and pitfalls of RNA-interference-based therapeutics.
[Pitfalls and Opportunities: What Macroeconomists Should Know about Unit Roots]: Comment
On Comparing Classifiers: Pitfalls to Avoid and a Recommended Approach
The study of transnationalism: pitfalls and promise of an emergent research field
Stem cells: attributes, cycles, spirals, pitfalls and uncertainties. Lessons for and from the crypt.
Identifying the pitfalls for social interaction in computer-supported collaborative learning environments: A review of the research.
