英语长难句讲解第6句

According to their latest paper published in Nature, the biomass of large predators ( animals that kill and eat other animals) in a new fishery is reduced on average by 80% within 15 years of the start of exploitation. (2006 T3#7#16#50)

biomass: the amount of living matter (as in a unit area or volume of habitat)

exploitation: the development and use of minerals, forests, oil etc for business or industry