我们是你的朋友马可、郭文洁。

I am your friend Mark, along with Wen-Jie.

youdao

郭文忠，陈国龙。离散粒子群优化算法及其应用[M]。北京：清华大学出版社，2012：5 - 6。

GUO w, CHEN G. Discrete particle swarm optimization algorithm and its application [m]. Beijing: Tsinghua University Press, 2012:5-6.

youdao

当郭文珺在陕西西安出生后不久，父母就离异了。她爸爸抚养她长大的，在她14岁的时候，她就被送去训练射击。

Guo's parents divorced soon after she was born in Xi'an, Shaanxi province. Guo's father raised her and introduced her to shooting when she was 14.

youdao