1. 千钧一发：tea garden (公园等处的)茶室, 茶叶种植场 | hang by a hair 千钧一发 | rotating member 回转件

2. 千钧一发;岌岌可危：hair in one's neck 麻煩事 | hang by a hair 千鈞一發;岌岌可危 | keep one's hair/wool on 保持冷靜;不發脾氣

3. 千钧一发;岌岌可危;摇摇欲坠：2、Hair头发 | (
1) Hang by a hair千钧一发;岌岌可危;摇摇欲坠. | (
2) Take a hair of the dog that bit you.以毒攻毒

verb

1. depend on a small thing or be at risk

    e.g. His life now hangs by a thread

    Synonym: hang by a thread