tā / rěn / bu / zhù / duō / zuǐ / bǎ / péng / you / zhǔn / bèi / de / jīng / xǐ / shuō / chū / lái / le

他忍不住多嘴，把朋友准备的惊喜说出来了。

He couldn't resist blabbing and revealed the surprise his friend had prepared.