美 [hæŋ baɪ ə θred]
岌岌可危：处于非常危险的境地或状态，非常接近死亡、失败等。
depend on a small thing or be at risk
同义词： hand by a hair
9) 千钧一发(hang by a thread)：描写将来社会人的基因问题的惊险影片，内容和主题俱佳。
... Greek gift(s) 阴谋害人的礼物，黄鼠狼给鸡拜年，不安好心 hang by a thread 千钧一发，岌岌可危 hair-splitter 钻牛角尖的人 ...
... Hand over 交出，移交 Hang by a thread 摇摇欲坠，危在旦夕 Hang on 坚持，不挂断，赖在某处不走，摆脱不掉，有赖于 ...
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千钧一发，摇摇欲坠
For some time after his dangerous operation, Keren's life hang by a thread.
在手术后的一段时间，凯伦的生命都处于垂危之中。
The fire was approaching people's houses. people's lives and properties were hang by a thread.
大火向民房逼近，人民的生命财产危在旦夕。
Sew a small loop of thread to the back of the angel to hang her by.
在小天使的后备缝上根线，头上系成圈，挂着方便，也好让天使真的飞起来。
Bristol's Championship play-off hopes hang by a thread after three successive defeats and Hull is set to exit in May.
When the market loses its momentum leaders, and you start seeing technical damage to individual stocks charts while the indices hang on by a thread, it is a sign of things to come.
The decision is also a reminder of the sad truth that our constitutional liberties hang by too slender a thread.