to watch to the end; to ascertain; to determine; to know thoroughly; to obtain a deep understanding of
to watch to the end; to ascertain; to determine; to know thoroughly; to obtain a deep understanding of
to be extremely difficult; to present a major challenge
to become rampant; to be rife
to be extremely difficult; to present a major challenge
to become rampant; to be rife
to rise to the highest possible rank
to present a very terrible (miserable) sight
to act with extreme violence