他赞扬amr公司尝试对系统进行彻底的整修，而不是逐步改良。

And he praised AMR for attempting a complete overhaul, rather than incremental improvements.

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自动刈草机在好几年前问世，历经多次挫折(很多跟树有关)并逐步改良后，最新产品已逐渐普及。

Autonomous lawnmowers have been around for several years, but after improving through hard knocks (some of them into trees), the newest generation is gaining popularity.

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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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