ad spending 中文意思是什麼
ad spending
解釋
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Jia sixie, one of china ' s early agricultural scientists, is said to have lived in the sixth century ad, spending his lifetime doing research into agriculture
中國的早期農業科學家之一的賈思勰據說生活在公元六世紀,花了一生的時間對農業進行研究。
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