2021考研英語長難句復習（六十八）

　　

　　That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.

　?、貲r. Myers and Dr. Worm argue that their work gives a correct baseline, which future management efforts must take into account.

　?、赥hey believe the data support an idea current among marine biologists, that of the “shifting baseline.”

　?、跿he notion is that people have failed to detect the massive changes which have happened in the ocean because they have been looking back only a relatively short time into the past.

　?、躎hat matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.

　?、軲ost fisheries are well below that, which is a bad way to do business.

　　參考譯文

　?、?觀點：總)邁爾斯博士和沃爾姆博士認為他們的工作將提供一個準確的捕撈數(shù)量基線，它是未來漁業(yè)管理層必須要考慮的事情。

　?、?具體：分1)他們認為這些數(shù)據(jù)支持了現(xiàn)在海洋生物學家的一種觀點，即“變化中的基線”。

　?、?并列：分2)這種觀點認為人們還沒發(fā)覺海洋中的巨大變化，因為他們只顧了過去相當短的一段時期的情況。

　?、?并列：分3)而這很重要，因為理論認為當目標物種的生物量達到原始基數(shù)的 50%左右時，從漁場中能夠獲得最 大的可持續(xù)產(chǎn)量。

　?、?并列：分4)大部分漁場都遠沒達到這個水平，這對于漁業(yè)而言是很不利的。