难题 使为难
Difficult problems make things difficult.
以上为机器翻译结果,长、整句建议使用 人工翻译 。
由于基因兴奋剂具有较高的隐蔽性,使检测成为难题。
Gene doping is concealable, so that it is difficult to detection.
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由于预拌砂浆的成本、应用、质量检验与处理等问题,使建筑砂浆商品化成为难题。
Commercialization of building mortar is obstructed due to problems in cost, application, quality test and treatment of pre-mixed mortar.
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