为了保证参加二十国集团峰会各国领导人的安全，韩国首尔会展中心宣布将用金鱼来监测会议场地卫生间的水质，确保用水安全。

The team safeguarding world leaders at the upcoming G20 summit has received some unlikely new members – in the form of six goldfish.

Managers at the Convention and Exhibition Centre in Seoul, South Korea, have enlisted¹ the help of the aquatic²（水生的） security guards to check the water purity in the venue's bathrooms, and hope they will be able to alert staff to any fishy³ goings on.

Oh Su-Young, PR manager at the centre, told AFP that the goldfish are simply being used as part of the inspection⁴ process ahead of the impending⁵（即将发生的） arrival of the G20 leaders, adding: 'The fish also symbolize⁶ an eco-friendly water policy, which recycles used water for the restrooms.'

The centre, which shares its water supply with a neighbouring shopping mall and trade centre, recycles nearly 150,000 tons of water a year at an annual saving of 360 million won (322,436 dollars).

This isn't the first time this year that organizers of a major event have enlisted members of the animal kingdom to boost security.

During the Commonwealth⁷ Games in Delhi, India, police drafted in trained monkeys to patrol the athletes' village and major venues⁸ where events were held.

The slender long-tailed Langurs were intended to protect both athletes and spectators from the Common Indian Bonnet⁹ monkey, which is known to attack humans.