How long before they take his head?

朝不保夕？

By singing with fervor, they're letting other birds know they survived the night—no guarantee in nature—and would make for an excellent mate.

通过热情地歌唱，它们让其他鸟儿知道自己已安然度过黑夜——要知道自然界动物过着朝不保夕日子，不一定能看见明太阳——并能够成为出色伴侣。

4 As a consequence of this, the very mention of music as a career carried with it the idea of an uncertain existence.

这件事影响就是只要一提到以音乐为生，我们就想到朝不保夕生活。

Their finances were a problem beyond me and would evidently have to take care of themselves, but it seemed to me that the children's futures held something better than a precarious living fishing on Orange Lake.

他们问题超出了我范围，显然他们必须照顾好自己，但在我看来，孩子们未来似乎比在奥兰治湖上朝不保夕捕鱼生活要好。

As a consequence of this example in the family, the very mention of music as a career carried with it the idea of an uncertain existence. My parents insisted upon college instead of music school, and so to college I went.

家里有了这个先例，后来只要一提到以音乐为生，我们就想到朝不保夕生活。父母坚持要我上大学而不是音乐学校，所以我就上了大学。