v be undecided about something; waver between conflicting positions or courses of actionv move or sway in a rising and falling or wavelike pattern
n. 摇摆( vacillate的名词复数 ); 振荡; 波动; 犹豫v. 摇摆( vacillate的第三人称单数 ); 振荡; 波动; 犹豫