哑然失笑

wǒ bù jīn yǎ rán shī xiào shǐ de jǐ wèi chéng kè duì wǒ cè mù

我不禁哑然失笑，使得几位乘客对我侧目。

A few passengers looked at me when I laughed out loud.

tā huí xiǎng qǐ zài yán sù kè táng shang zì jǐ jìng rán chūn xīn méng dòng bù jìn yǎ rán shī xiào

他回想起在严肃课堂上，自己竟然春心萌动，不禁哑然失笑。

He could afford to smile now when he recalled the solemn class in which he had first lost his heart.