to discover the main cause of a problem
問題の根本原因を見つける (mondai no konpon gen'in o mitsukeru)
"We need to get to the root of the problem before we can fix it."
"私たちはそれを解決する前に、問題の根本を突き止める必要があります。" (Watashitachi wa sore o kaiketsu suru mae ni, **mondai no konpon o tsukitomeru** hitsuyō ga arimasu.)
a series of events triggered by one event
To secretly support or manipulate both sides of a conflict f...
directly from the original or reliable source
to win by a very large margin
to hide the most important part of the story
when something begins to decline in quality or popularity
