A lesson from the past and a lesson from the future
以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译
Machanization of Agriculture and Electrification
...lway Signalling & Communication] 前车之鉴后事之师 [农业机械化与电气化 Machanization of Agriculture and Electrification] 论"习惯性"违章与管理性违章 [建筑安全 Construction Safety] ..
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