tā / yì / shí / xiǎng / bù / chū / dá / àn / jué / de / zì / jǐ / de / xīn / qiào / xiàng / shì / bèi / dǔ / zhù / le

他一时想不出答案，觉得自己的心窍像是被堵住了。

He could not think of the answer for a moment and felt as if his mind were blocked.