熟练

她的英语口语非常熟练。

Tā de Yīngyǔ kǒuyǔ fēicháng shúliàn.

Her spoken English is very proficient.

经过多年练习，他已经很熟练了。

Jīngguò duō nián liànxí, tā yǐjīng hěn shúliàn le.

After many years of practice, he has become very skilled.

熟练掌握这项技术需要时间。

Shúliàn zhǎngwò zhè xiàng jìshù xūyào shíjiān.

Mastering this technology requires time.