This is the 10940th most frequent Russian word.
высокоскоростных
"High-speed."
Adjective describing 'поезда', indicating the characteristic of being high-speed.
Новые высокоскоростные поезда скоро начнут курсировать в России.
New high-speed trains will soon begin to operate in Russia.
Adjective describing 'технологий', referring to the nature of the technologies as high-speed.
Использование высокоскоростных технологий становится всё более распространённым.
The use of high-speed technologies is becoming increasingly common.
Adjective modifying 'животных', defining them as possessing high-speed characteristics.