... blade with stepped root 阶梯形叶根叶片 blade with straddle root 外包形叶根叶片 blading 叶片，叶栅，装叶片；配置；移运 ...
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短语
外包枞树形叶根叶片
fir-tree straddle root blade
;
blade with external fir-tree root
外包T形叶根叶片
blade with external T-root
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