目前，最经济方便的方法就是对钢结构涂覆防火涂料。
At present the most economical convenience method is spreading fire protection coating to the steel structure.
曼胡德为了方便自己作了这样的安排——从她的角度来说在经济上是最划算的。
Manhood made the arrangement to suit herself economically most desirable from her point of view.
世界卫生组织（WHO）认为预防接种是最经济、有效、方便的预防儿童传染性疾病的公共卫生措施之一。
WHO holds that vaccination is one of the most economical, effective and convenient public health measures to prevent children's infectious diseases.
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