作者经过长期摸索，制订出有关新产品开发和质量控制的程序文件，在本企业实施后，取得了一定的成效。
The program document of new product development and quality control has been formulated and implemented in the enterprise with a good result obtained.
经过长期的摸索，科学今日已经知道肥效最高的肥料就是人肥。
Science, after having long groped about, now knows that the most fecundating and the most efficacious of fertilizers is human manure.
暖心我做微商一年了，经过长期的摸索，终于已经从前期的埋没，不断的披荆斩棘，突破了微商的瓶颈。
Warm heart I do wechat business for one year, after a long period of groping, finally has been from the early stage of the buried and continuous way, broke through the bottleneck of wechat business.
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