hesitate/'hezɪteɪt/

v. pause for a moment because you feel uncertain or nervous

v. [I] 犹豫，迟疑不决：[hesitate about（或over） sth] She hesitated about whether to accept his gift. 她对是否接受他的礼物有点犹豫不决。

谚语He who hesitates is lost. 举棋不定，坐失良机。