ГДЗ по английскому языку 11 Класс класс упражнение - 109 р. 7

The phrase “the unspeakable something that struggles for expression” refers to a deep, intense feeling or message inside White Fang that he cannot express in words. It is something powerful and urgent — likely his concern or warning about what has happened to his master — that he desperately wants to communicate but cannot speak like a human.

“His throat twitched, but made no sound, while he struggled with all his body, shaking with the effort to rid himself of the unspeakable something that struggled for expression.”

This shows White Fang physically trying to express what he feels inside but unable to produce a sound at that moment. Later, he finally barks loudly to communicate: “At this moment speech came to White Fang, rushing up in a great burst of barking.” This is when he manages to make himself understood, showing that the “unspeakable something” was an urgent message about the master’s injury.