Meaning of ná xià:
拿下
to arrest; to capture; to seize; to win (a set, a game etc)
Jǐngchá shèfǎ shùnlì de bǎ xiányífàn gěi ná xià le.
警察设法顺利地把嫌疑犯给拿下了。
The police managed to successfully arrest the suspect.
Jīngguò duō cì nǔlì, jǐngchá zhōngyú jiāng fànzuì xiányírén ná xià.
经过多次努力,警察终于将犯罪嫌疑人拿下。
After many efforts, the police finally captured the suspect.
Jǐngchá zhōngyú jiāng xiányífàn ná xià le.
警察终于将嫌疑犯拿下了。
The police finally seized the suspect.
Tā zài bǐsài zhōng qīngsōng de ná xià le dì yī míng.
他在比赛中轻松地拿下了第一名。
He easily won first place in the competition.