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a/the eggshell
eggshell 是可数名词；指单个蛋壳时前面通常加 a/an 或 the。
An eggshell has tiny pores that let the embryo breathe.
一个蛋壳上有微小气孔，让胚胎得以呼吸。
蛋壳
eggshells — plural of eggshell
先理解核心含义，再看它在真实句子里的用法。
蛋壳
the exterior covering of a bird's egg
An eggshell has tiny pores that let the embryo breathe.
一个蛋壳上有微小气孔，让胚胎得以呼吸。
蛋壳。
The shell around an egg.
鸟蛋的外壳
the exterior covering of a bird's egg
淡米白色,类似许多鸡的蛋壳颜色。
A pale off-white colour, like that of the eggshell of many chickens.
She carefully peeled the boiled egg and put the eggshell into the compost bin.
她小心地剥开煮鸡蛋，把蛋壳放进堆肥箱。
These eggshells can be crushed and used as a natural fertilizer for the garden.
这些蛋壳可以压碎后用作花园的天然肥料。
A thin eggshell may crack easily if you press it too hard.
如果你用力过猛，薄蛋壳可能很容易破裂。
eggshell 是可数名词；指单个蛋壳时前面通常加 a/an 或 the。
An eggshell has tiny pores that let the embryo breathe.
一个蛋壳上有微小气孔，让胚胎得以呼吸。
表示不止一个蛋壳时用复数形式 eggshells。
We collected some eggshells for the craft project.
我们收集了一些蛋壳用于手工项目。
用 of 短语指明蛋壳属于哪种蛋；中文常说“鸭蛋的蛋壳”而英文用 of。
The eggshell of a duck is usually pale green or white.
鸭蛋的蛋壳通常是淡绿色或白色。
Not this
There are eggshell in the compost.
Use this
There are eggshells in the compost.
eggshell 是可数名词，复数形式为 eggshells。中文的“蛋壳”没有复数变化，容易忘记加 -s；但句中主语是复数，必须用 eggshells。
Not this
I found eggshell in my omelette.
Use this
I found an eggshell in my omelette.
eggshell 是单数可数名词，前面需要冠词 a/an。中文说“我发现了蛋壳”不用冠词，但英语中 an eggshell 才正确，不能省略。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
如履薄冰；小心翼翼
Everyone at the meeting walked on eggshells around the angry boss.
开会时大家在愤怒的老板身边都小心翼翼。
蛋壳膜
Eggshell membrane is rich in collagen and is used in joint supplements.
蛋壳膜富含胶原蛋白，常用于关节保健品。
碎蛋壳
She sprinkled crushed eggshells around the seedlings to deter slugs.
她在幼苗周围撒上碎蛋壳来驱赶蛞蝓。
蛋壳漆（微光涂料）
We chose eggshell paint for the living room walls because it is easy to clean.
我们为客厅墙壁选了蛋壳漆，因为这种漆容易清洁。
蛋壳瓷
The museum displayed delicate eggshell porcelain from the Qing dynasty.
博物馆展出了精美的清代蛋壳瓷。
蛋壳白（一种米白色）
The kitchen cabinets are painted a warm eggshell white.
厨房橱柜被刷成温暖的蛋壳白。
小心翼翼地行事；如履薄冰
Ever since the argument, I feel like I have to walk on eggshells around him.
自从那次争吵之后，我觉得在他身边必须小心翼翼。
Use eggshells naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
egg（蛋）加shell（壳）就是蛋壳，想象轻敲蛋壳裂开的瞬间。
语域：neutral 常见场景：日常对话、烹饪、生物学、手工制作 这个义项指鸟蛋外壳，属于日常普通名词。通常不区分语体，在正式与非正式场合都适用；在烹饪、生物讲解或手工活动中比较常见。
发音比较：eggshell /ˈɛɡˌʃɛl/ 的末尾 /ʃɛl/ 与 seashell、nutshell、bombshell、shell 的 /ʃɛl/ 相同，可视为押韵；bell 的 /bɛl/ 与 shell 的 /ɛl/ 押韵，但少了 /ʃ/；beg 的 /bɛɡ/ 与 eggshell 开头的 egg /ɛɡ/ 相同，但拼写不同。注意 beg 的元音是 /ɛ/，不要与 bag /bæɡ/ 混淆。
Dictionary facts from ECDICT, WIKTIONARY.