不 ㄅㄨ ˋ bù 绝 ㄐㄩㄝ ˊ jué 如 ㄖㄨ ˊ rú 缕 ㄌㄩ ˇ lǚ 不 ㄅㄨ ˋ bù 絕 ㄐㄩㄝ ˊ jué 如 ㄖㄨ ˊ rú 縷 ㄌㄩ ˇ lǚ hanging by a thread very precarious almost extinct (of sound) linger on faintly