得意忘形

He prides himself on being a member of a good family.

他以身为良好家庭的一分子得意忘形。

He was swollen by victory.

他因得意忘形。

NEVER cheer for the coup until the countercoup has failed. Though Pluto has officially lost its lofty title of “planet”, a rebellion against its demotion is brewing.

千万不要因为一时的得势得意忘形。尽管冥王式失去了它行的高级头衔，但是反对这一降级的行动酿之中。