例句：

　　Bill was stimulated by the challenge.

　　比爾受到該挑戰(zhàn)的激勵。

　　She beat off a challenge to her leadership.

　　她戰(zhàn)勝了對她的領(lǐng)導(dǎo)地位的挑戰(zhàn)。

　　I hope that he proves equal to the challenge.

　　我希望他最后能應(yīng)付這一挑戰(zhàn)。