如果持续地否认，不去采取合理的行动，例如咨询医生，那么否认就是不利的反应。
If denial persists and prevents you from taking appropriate action, such as consulting your doctor, it's a harmful response.
在全球经济陷入衰退之际，G20已站到了最前沿，因为领导人希望作出协调一致的反应，以防止一个国家所推行的政策让其他国家陷入不利地位。
The G-20 has come to the forefront during the global recession, as leaders sought a coordinated response to prevent nations from pursuing policies that could disadvantage rivals.
化合物(6)上与氮相连的活泼氢原子，可能对某些反应有不利影响，故用碘甲烷对其进行甲基取代，得到了新的手性胍—化合物(7)，并做了表征。
The active hydrogen in the compound (6) might take negative effect in some reactions and was substituted by a methyl to get compound (7) which was a new chiral guanidine.
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