1
the stoma
特指已知或唯一的气孔。
The stoma regulates gas exchange in the leaf.
气孔调节叶片中的气体交换。
气孔
stomata — plural of stoma
先理解核心含义，再看它在真实句子里的用法。
气孔
a tiny pore in a plant's leaf or stem through which gases and water vapor pass
The stoma regulates gas exchange in the leaf.
气孔调节叶片中的气体交换。
叶子或茎表皮上的小孔,气体和水蒸气通过
One of the tiny pores in the epidermis of a leaf or stem through which gases and water vapor pass.
叶子或茎上的微小表皮孔,气体和水蒸气可以通过
a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
膜上的小开口；尤其是手术构造的开口,如结肠造口术或回肠造口术后的废物排出口；人工肛门
A small opening in a membrane; a surgically constructed opening, especially one in the abdominal wall that permits the passage of waste after a colostomy or ileostomy; an artificial anus.
口或类似口的开口(尤其是通过手术在身体表面创建的通向内部器官的开口)
a mouth or mouthlike opening (especially one created by surgery on the surface of the body to create an opening to an internal organ)
Under the microscope, we could see a single stoma surrounded by two guard cells.
在显微镜下，我们能看到一个气孔被两个保卫细胞包围着。
The plant closes its stomata at night to reduce water loss.
这种植物在夜间关闭气孔以减少水分流失。
Carbon dioxide enters the leaf through a stoma on the underside.
二氧化碳通过叶片下表面的气孔进入叶子。
特指已知或唯一的气孔。
The stoma regulates gas exchange in the leaf.
气孔调节叶片中的气体交换。
首次提及或泛指。
A stoma is a tiny pore in the leaf surface.
气孔是叶片表面的微小小孔。
表示气体或水蒸气的路径。
Water vapor exits through the stoma.
水蒸气通过气孔排出。
Not this
The leaf has many stoma.
Use this
The leaf has many stomas.
“stoma”是可数名词，复数形式为“stomas”，表示多个气孔时应用复数。
Not this
The gas passes in the stoma.
Use this
The gas passes through the stoma.
根据定义，气体和水蒸气通过气孔（pass through）进出，因此应用介词“through”而非“in”表示通过。
Choose the next layer that will help you use stomata with more confidence.
Recommended next
Missing: Collocations
Complete this area with collocations.
Includes Context & register & Memory tip
Analyze the context and learn memory tricks to remember it.
More ways to explore
Includes Synonyms & Antonyms
Expand your vocabulary with synonyms and antonyms.
Includes Spelling & sound
Explore words with similar spelling endings or sounds.
Includes Word components & Thematic vocabulary
Learn how to build related words using roots, prefixes, and thematic clusters.
Includes Idioms & Cultural references
Discover idioms, slang, and famous pop culture quotes.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
Use stomata naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.