Word · Frequency #22822
writhe
/raið/
noun
拧数；纽结正负交叉数之差
The number of negative crossings subtracted from the number of positive crossings in a knot.
- 1.
The number of negative crossings subtracted from the number of positive crossings in a knot
拧数
拧数；扭动；盘绕；苦恼
In use
The writhe of this knot is a simple integer that helps distinguish it from its mirror image.
To calculate the writhe, count each positive crossing as +1 and each negative crossing as −1.
These two diagrams have the same writhe even though they look quite different.
Connections
Collocations
- positive writhe
- 正拧数
- A right-handed trefoil knot has a positive writhe.右手三叶结具有正拧数。
- negative writhe
- 负拧数
- A left-handed trefoil knot has a negative writhe.左手三叶结具有负拧数。
- total writhe
- 总拧数
- The total writhe is calculated by adding the signs of all crossings.总拧数通过将所有交叉点的符号相加来计算。
- writhe of a knot
- 纽结的拧数
- The writhe of a knot is the number of positive crossings minus the number of negative crossings.纽结的拧数是正交叉数减去负交叉数。
Word family
- writhes
- plural, third person singular
Learner notes
Memory Tip
writhe 本义为“扭动”，纽结中正负交叉相抵的数目就是拧数：记住“扭动”便记住“拧数”。
Context & Register
语域：formal 常见场景：knot theory、mathematical writing 这个词作名词时是纽结理论中的专业术语，通常出现在学术论文或数学教材中，属于正式用法，日常口语中很少使用。
Pronunciation & Spelling
同韵词（与 writhe /raɪð/ 押韵）：blithe、lithe、scythe、tithe 都读 /aɪð/，且拼写均以 -the 结尾。形近词：write /raɪt/ 和 wreath /riːθ/ 虽以 wr- 开头，但发音不同——write 的结尾是 /t/，wreath 的元音是 /iː/ 且结尾是清音 /θ/，均不与 writhe 押韵，注意区分。
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
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。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.