inversion

• 名词，表示颠倒、反转、倒置或使事物变为相反状态、顺序或位置的动作或过程。

A noun referring to the act or process of reversing, inverting, or turning something upside down, inside out, or into an opposite state, order, or position.

1. Meteorological inversionC1formalscientific

   A layer of air near the earth's surface that is cooler than an overlying layer, trapping pollutants.

   逆温

   • The temperature inversion prevented smog from dispersing over the city.
   • Meteorologists predicted a strong inversion layer for the morning.
   • Inversions often cause poor air quality in valleys.

2. Medical inversionC2formalmedical

   An abnormal condition where an organ is turned inward or inside out, such as the uterus after childbirth.

   内翻（医学）

   • Uterine inversion is a rare but serious complication of delivery.
   • The surgeon corrected the inversion of the organ.
   • Prompt treatment is essential for cases of inversion.

   同义词introversioninvagination

3. Chemical inversionC2formalscientific

   A chemical process where the direction of optical rotation of a substance is reversed, e.g., from dextrorotatory to levorotary.

   化学转化

   • Sucrose undergoes inversion to form a mixture of glucose and fructose.
   • The chemist observed the inversion of the solution's optical activity.
   • Inversion is a key step in the production of invert sugar.

4. Genetic inversionC2formalscientific

   A type of mutation where the order of genes in a section of a chromosome is reversed.

   遗传倒位

   • Chromosomal inversion can lead to altered gene expression.
   • The inversion was detected during genetic screening.
   • Inversions are a common mechanism of evolutionary change.

5. Grammatical inversionB2formal

   The reversal of the normal order of words, often for emphasis or in questions.

   倒装

   • Inversion is used in English to form questions, e.g., 'Are you coming?'
   • The poet used inversion for stylistic effect.
   • 'Never have I seen such beauty' is an example of inversion.

   同义词anastrophehyperbatonreversaltransposition

6. Musical inversionC2formalart

   A variation of a melody or part where ascending intervals are replaced by descending intervals and vice versa.

   旋律转位

   • The composer used inversion to create a contrasting theme.
   • In counterpoint, inversion is a common technique.
   • The fugue features a clever inversion of the main subject.

   同义词mirror