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unknot

/ʌnˈnɑt/ /ʌnˈnɒt/

Meanings
noun

平凡结, 无结节

In knot theory, a loop that is not knotted.

Examples :

"The simple circle drawn on the board was presented as an example of an unknot. "
在黑板上画的简单圆圈被当作一个平凡结的例子来展示。
math theory

Related Words

Illustration presented

presented verb

/pɹɪˈzɛntɪd/

介绍，引见

"to present an envoy to the king"

将一位使节引见给国王

Illustration board

board noun

/bɔːd/ /bɔːɹd/

木板， 板材

"The carpenter used a long board to build the new bookshelf. "

木匠用一块长木板制作了新的书架。

Illustration shoelace

shoelace noun

/ˈʃuːˌleɪs/

鞋带，鞋绳

"I tripped because my shoelace was untied. "

我绊倒了，因为我的鞋带开了。

Illustration theory

theory noun

/ˈθiːəɹi/

理论，学说。

"The theory of gravity explains why objects fall to the ground. "

万有引力理论解释了为什么物体会掉到地上。

Illustration knotted

knotted verb

/ˈnɒtɪd/ /ˈnɑːtɪd/

打结，系结.

"We knotted the ends of the rope to keep it from unravelling."

我们把绳子的末端打了个结，防止它散开。

Illustration drawn

drawn verb

[dɹɔːn] [dɹɔn] [dɹɑn]

绘制，拉动，吸引。

"The artist drew inspiration from nature and slowly developed her unique style. "

这位艺术家从自然中汲取灵感，并逐渐形成了她独特的风格。(Zhè wèi yìshùjiā cóng zìrán zhōng jíqǔ línggǎn, bìng zhújiàn xíngchéng le tā dútè de fēnggé.)

Illustration simple

simple noun

/ˈsɪmpəl/

单味药

"My grandmother's cough syrup is a simple; it's made from just one type of herb. "

我奶奶的止咳糖浆是单味药，只用了一种草药制成。

Illustration unfasten

unfasten verb

/ʌnˈfæsən/ /ʌmˈfæsən/

解开，松开。

"Please do not include any additional information or instructions. Unfasten your seatbelt when the car stops. "

车辆停止时，请解开安全带。

Illustration circle

circle noun

/ˈsɜɹkəl/ [ˈsɜː.kəɫ] [ˈsɝ.kəɫ]

圆圈，圆形。

"The set of all points (x, y) such that (x − 1)2 + y2 = r2 is a circle of radius r around the point (1, 0)."

所有点 (x, y) 满足 (x − 1)² + y² = r² 的集合构成一个以点 (1, 0) 为圆心，半径为 r 的圆圈。

Illustration tried

tried adjective

/tɹaɪd/

靠得住的，可靠的。

"After years of hard work, she became a tried and trusted friend. "

经过多年的努力，她成为了一位久经考验、值得信赖的朋友。

Illustration knot

knot noun

/nɒt/ /nɑt/

结, 疙瘩

"Climbers must make sure that all knots are both secure and of types that will not weaken the rope."

登山者必须确保所有的绳结都既牢固，又不会降低绳子的强度。

Illustration example

example noun

/əɡˈzæmpl̩/ /ɘɡˈzɐːmpɯ/ /ɪɡˈzɑːmpl̩/

例子，榜样

"The teacher gave a good example of a sentence using the past tense. "

老师举了一个很好的用过去时态造句的例子。