tā / suī / rán / jīng / yàn / bù / zú / dàn / bìng / bù / yòu / nèn / hěn / kuài / jiù / xué / huì / le / chǔ / lǐ / wèn / tí

他虽然经验不足，但并不幼嫩，很快就学会了处理问题。

Although he lacked experience, he was not naive and quickly learned to handle the problem.