While tasty, such seeds are delicate — they cannot bud and grow if they dry out as you may know if you've ever tried to grow a tree from an avocado pit.
2018年6月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
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鳄梨；牛油果
Avocados are pear-shaped vegetables, with hard skins and large stones, which are usually eaten raw.