He's still hesitating about joining the expedition.

他对于参加探险队仍犹豫不决。

The speaker hesitated and then went on with his speech.

演说者停顿了一下，然后继续他的演说。

Tom hesitated to ask Doris to the dance because he was afraid that she'd say no.

汤姆结结巴巴地邀请桃乐丝参加舞会，因为他怕她会拒绝。