shilly-shally
verb [ I ] informal disapproving uk/ˈʃɪl.iˌʃæl.i/ us/ˈʃɪl.iˌʃæl.i/
动摇不定;犹豫不决
to spend too much time doing something or making a decision because you do not know what is the right thing to do
Stop shilly-shallying and make a decision now! 别再犹豫了，现在就作决定吧！