He plans to fertilise his fields with manure, rather than chemicals derived from oil and natural gas.
他想用肥料种地而不是用从石油和天然气中提炼的化学成分。
The 「artificial sperm」 were then used to fertilise eggs, leading to the birth of 60 「grossly healthy」 baby mice, who went on to have families of their own, the journal Cell reports.