还有其它一些失败的原因，比如缺乏灵活的设计、规划不充分，或是资金问题。
Still others fail due to lack of design flexibility, inadequate planning, and funding issues.
因同样的理由，肽类免疫应答常因缺乏适当的辅助T淋巴细胞(HTL)而引导出不充分的细胞毒素T淋巴细胞(CTL)和抗体反应。
For the same reason, peptide immunizations often elicit inadequate cytotoxic t lymphocyte (CTL) and antibody (Ab) responses due to the lack of appropriate helper t lymphocyte (HTL) activity.
我国之所以很少采取用此策略，其原因主要是存在对转移定价认识不充分，未形成有效的国际经营管理体制，缺乏快捷信息系统及有效的指导。
Our country scarcely takes this strategy mainly due to insufficient recognition on transfer pricing, lack of efficient international management system, rapid information system, and efficient guide.
我国之所以很少采取用此策略，其原因主要是存在对转移定价认识不充分，未形成有效的国际经营管理体制，缺乏快捷信息系统及有效的指导。
Our country scarcely takes this strategy mainly due to insufficient recognition on transfer pricing, lack of efficient international management system, rapid information system, and efficient guide.
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