改良改进现有包装，为企业提供借鉴。
Modified to improve the existing packaging, to provide reference for enterprises.
最终，人们试图改进莱斯·保罗的模型，应该说，是对其进行改良。
So eventually, people tried to improve on Les Paul's model, well, to modify it I should say.
应急设施必须随着情况改善予以逐步改进或以简易坑式厕所、通风改良坑式厕所或节水型水冲式厕所予以替代。
Emergency facilities need to be progressively improved or replaced with simple pit latrines, ventilated improved pit latrines, or poor-flush latrines as the situation develops.
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