1.take off 突然成功
In 1944, he met Edith Piaf, and his career took off.
1944年，他遇到伊迪丝•琵雅芙，从此他的事业飞黄腾达。
2.die out 逐渐消亡
We used to believe that capitalism would soon die out.
我们曾以为资本主义很快会消亡。
3.phase-out 逐步淘汰
They said the present system of military conscription should be phased out.
他们说现行的征兵体系应该逐步淘汰。
4.beef up 加强
Both sides are still beefing up their military strength.
双方仍在增强各自的军事力量。 

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