n. mower
misc. mowing machine
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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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