mate

I am going to the pub later to meet a few of my old school mates.

(Chinese) 我待会儿要去酒吧见几个老同学（哥们儿）。

'Thanks for the help, mate!' he said as he loaded the boxes into the car.

(Chinese) “谢了兄弟！”他把箱子装进车里时说道。

Many bird species travel long distances to specific islands to mate and raise their young.

(Chinese) 许多鸟类长途跋涉到特定的岛屿进行交配并抚育幼鸟。

Zookeepers hope the two giant pandas will mate naturally during the breeding season.

(Chinese) 动物园管理员希望这两只大熊猫能在繁殖季节自然交配。

The male penguin searches for a mate by presenting a smooth pebble to the female.

(Chinese) 雄企鹅通过向雌企鹅献上一块平滑的小圆石来寻找配偶。

I can't find the mate to this blue sock; it must have been lost in the laundry.

(Chinese) 我找不到这只蓝色袜子的另一只（配对的一只）了；肯定是在洗衣服时丢了。