They removed marine litter from more than 21,000 km of coastline and waterways, collecting more than 6.2 million pieces of marine litter, weighing over 4,000 tonnes.
他们从21 000多公里的海岸线和水道清除海洋垃圾，收集了620多万件海洋垃圾，重量逾4 000吨。