hang by a thread片语KK [hæŋ baɪ ə θrɛd] /hæŋ baɪ ə θɹɛd/发音片语1危在旦夕、命悬一线After the accident, his life hung by a thread for days.事故之后,他的生命危在旦夕,持续了好几天。2岌岌可危、摇摇欲坠The peace agreement now hangs by a thread.这份和平协议如今已岌岌可危。用这个字练口说→