Within his lifetime, Malthus was able to witness incredible surges in mankind's agricultural productivity, thanks to inventions like the steam engine and the cotton gin.
在Malthus一生中，他能够目睹到人类农业生产力的巨大飞跃，这要感谢蒸汽机和轧棉机这些发明。
2
The research of search engine for agriculture is extremely essential, when a lot of agricultural information is required by users today.
用户对农业信息的需求越来越多，农业搜索引擎的开发变得十分必要。
3
The author in the use of agricultural diesel engine common faults, for example, briefly discusses its causes and diagnosis.