Taking an irreversible step with serious consequences.
重大な結果を伴う取り返しのつかない一歩を踏み出す。
"By going public with the information, he was crossing the Rubicon."
"情報を公開することで、彼は取り返しのつかない一歩を踏み出した。"
a moment of sudden discovery or realization
to hope that things will happen the way you want
a strong motivation to achieve something
a person who helps others selflessly
to function perfectly or very effectively
to free oneself from restrictions or limitations