不是每根钟乳石都有互生的石笋。
欧亚大陆一种落叶乔木，有互生的单叶及白色或粉色的花朵。
A deciduous Eurasian tree having alternate simple leaves and white or pink flowers.
杏树一种原产于亚洲和北非的落叶树(杏树)，有互生的单叶，粉色花朵和坚韧果实。
A deciduous tree (Prunus dulcis), native to Asia and northern Africa and having alternate, simple leaves, pink flowers, and leathery fruits.
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