Scientists recently studied the effects of mechanical thinning on two kinds of pecan trees in the southeastern United States.
研究人员最近研究了机器修剪对美国东南部两种山核桃树的影响。
Scientists recently studied the effects of mechanical thinning on two kinds of pecan trees in the southeastern United States.
研究人员最近研究了机器修剪对美国东南部两种山核桃树的影响。
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