柯林斯詞典crab apple (crab apples) 1. N-COUNT A crab apple is a tree like an apple tree that produces small sour fruit. 山楂樹(shù) 返回 crab apple劍橋詞典(the small , sour fruit of) a small tree that has attractive flowers 酸蘋(píng)果（樹(shù)），花紅（樹(shù)），沙果（樹(shù)） a crab apple tree 花紅樹(shù) 返回 crab apple