... irreversible engine 不可逆转发动机 irrigation shovel 挖沟铲 iso-amyl cyanide 异戊基氰 ...
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He was digging an irrigation ditch around a rice paddy, contemplating which tool was more effective, a hoe or a shovel.
他正在一片稻田周围挖掘一条灌溉渠,一边想着哪件工具更加有效,是锄头还是铁铲?
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