Many detergent suppliers will not provide specificcomposition, which makes it difficult for the user to evaluate residues.
许多清洁剂供应商并没有说明清洁剂的成分，这使生产商难以评估残留物。
2
But the ratio of spending cuts to tax hikes, and the specificcomposition of both, present a seemingly insurmountable stumbling block.
可是，削减开支与增税之间的比例以及两者的具体构成方式却代表了一个看来无法克服的障碍。
3
A study was carried out on species and specificcomposition of aquatic microorganisms in fish-rice ecosystem in soda saline-alkaline land of the Songnen Plain.