This is the 17019th most frequent Russian word.
спектры
"Spectry" in English means "spectra," referring to ranges of light, energy, or characteristics.
Here, 'спектры' refers to the spectral distribution of light wavelengths.
Спектры света разбиваются на множество оттенков.
Spectra of light are divided into numerous shades.
In this sentence, 'спектры' denotes the spectral lines representing the characteristic wavelengths emitted or absorbed by chemical elements.
Учёные изучают спектры химических элементов.
Scientists study the spectra of chemical elements.
Here, 'спектры' pertains to the frequency distribution of sound waves from musical instruments.