a tropical American tree(Persea americana) having oval or pear-shaped fruit with leathery skin,yellowish-green flesh,and a large seed是什么意思_a tropical American tree(Persea americana) having oval or pear-shaped fruit with leathery skin,yellowish-green flesh,and a large seed在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句