an acorn
acorn是可数名词，单数形式前需加不定冠词。
An acorn fell from the tree.
一颗橡子从树上掉了下来。
橡子
桅顶橡子形木块；藤壶；橡树的果实,椭圆形坚果,生于木质杯状壳斗中。；橡树的果实:一种光滑、薄壁的坚果,基部有木质杯状壳斗。；桅杆顶风标上方 spindle 尖端的锥形木块。
The fruit of the oak: an oval nut growing in a woody cup.
橡树的果实,椭圆形坚果,生于木质杯状壳斗中。
The fruit of the oak, being an oval nut growing in a woody cup or cupule.
橡树的果实:一种光滑、薄壁的坚果,基部有木质杯状壳斗。
fruit of the oak tree: a smooth thin-walled nut in a woody cup-shaped base
桅杆顶风标上方 spindle 尖端的锥形木块。
A cone-shaped piece of wood on the point of the spindle above the vane, on the mast-head.
见 acorn-shell。
See acorn-shell.
The squirrel buried an acorn in the garden.
松鼠在花园里埋了一颗橡果。
用法提示：acorn 作为可数名词单数形式，表示一颗橡果。
Children collected acorns in a basket during their nature walk.
孩子们在自然散步时捡了一篮子的橡果。
用法提示：acorns 作为可数名词复数形式，表示多个橡果。
An acorn can grow into a mighty oak tree given enough time.
一颗橡果假以时日可以长成一棵高大的橡树。
用法提示：acorn 作为可数名词单数形式，强调橡果的生长潜力。
acorn是可数名词，单数形式前需加不定冠词。
An acorn fell from the tree.
一颗橡子从树上掉了下来。
Squirrels love to eat acorns.
松鼠喜欢吃橡子。
In autumn, people collect acorns.
秋天人们收集橡子。
acorn特指橡树的坚果，nut泛指所有有硬壳的食用果仁，不如acorn具体。
grammar · medium
易错句子I saw many acorn on the ground.
正确表达I saw many acorns on the ground.
Acorn是可数名词，复数形式需加-s，表示多个橡果。
grammar · medium
易错句子Acorn is a seed of oak tree.
正确表达An acorn is a seed of an oak tree.
Acorn是单数可数名词，前面需加不定冠词an（因元音开头），且oak tree前也需加冠词。
与acorn不同，chestnut（栗子）有带刺的外壳，且通常被人类食用。
walnut（核桃）有厚而硬的果壳和皱褶的核仁，而acorn果壳平滑且底部有杯状壳斗。
收集橡子
In autumn, we gather acorns from the forest floor.
秋天我们到森林地面收集橡子。
橡子南瓜
Acorn squash is delicious when baked with butter.
橡子南瓜用黄油烤着吃很美味。
橡子啄木鸟
The acorn woodpecker stores acorns in tree trunks.
橡子啄木鸟把橡子储存在树干里。
橡子收成
This year's acorn crop is abundant.
今年的橡子收成很丰富。
橡子产量
Acorn production varies from year to year.
橡子的产量每年不同。
橡子象鼻虫
Acorn weevils lay eggs in developing acorns.
橡子象鼻虫在发育中的橡子里产卵。
橡树是橡果的来源树，两者直接关联。
橡果是一种坚果，属于坚果类食物。
松鼠常吃橡果，是常见的动物关联。
橡树和橡果常见于森林生态系统中。
橡果是树的果实，属于树木产物。
参天大树从小橡果长起
Remember that great oaks from little acorns grow, so don't underestimate small beginnings.
记住，参天大树从小橡果长起，所以不要低估小小的开始。
参天大树从小小橡果长成。
When he started his business with just $100, his mentor said, 'Remember, great oaks from little acorns grow.'
当他仅用100美元创业时，他的导师说：‘记住，参天大树从小小橡果长成。’
我会是你的橡果，你会是我的树。
In their wedding vows, she quoted the line 'I'll be your acorn, you'll be my tree' from The Coral's song.
在她的婚礼誓言中，她引用了珊瑚乐队的歌词：‘我会是你的橡果，你会是我的树。’
Dictionary facts from ECDICT, WIKTIONARY.