Learn the forms together
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。
四个一组的事物。
先理解核心含义,再看它在真实句子里的用法。
四个一组的事物。;在减数分裂过程中,两对姐妹染色单体(二分体对)以特定方式排列,通常位于赤道面上。;由减数分裂小孢子发生产生的四个单倍体未成熟花粉粒,呈四面体排列。;一种土地面积单位,二乘二(即四)平方公里。;四价原子或基团。
A group of four things.
Prepare the learner guide for this word
可生成:语法 Grammar、学习解释 Learner guide、例句 Examples。只有点击后才会开始生成。
四个一组的事物。
A group of four things.
在减数分裂过程中,两对姐妹染色单体(二分体对)以特定方式排列,通常位于赤道面上。
Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
由减数分裂小孢子发生产生的四个单倍体未成熟花粉粒,呈四面体排列。
A group of four haploid and immature pollen grains in tetrahedral fashion produced by meiotic microsporogenesis.
一种土地面积单位,二乘二(即四)平方公里。
A unit of land area of two by two (that is, four) square kilometres.
Choose the next layer that will help you use tetrad with more confidence.
Recommended next
Includes Usage patterns & Collocations
Learn how to use this word with grammar patterns and natural collocations.
Includes Common mistakes & Confusing words
See typical errors learners make and confusing words to avoid.
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.
Includes Context & register & Memory tip
Analyze the context and learn memory tricks to remember it.
Use tetrad 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.