鯉魚過多成問題，美國官員找對策。

Hints:
the Great Lakes
Michigan
Mississippi
Midwest
Utah
Provo
June sucker
The barrier, however, may not be enough to protect the Great Lakes. There are calls in Congress for emergency action. Officials could close shipping connections between Lake Michigan and the upper Mississippi River system. But there are no decisions yet. So that is the situation in the Midwest. Fart…
然而，這種關(guān)卡也許并不足以保護五大湖。國會傳出呼聲，要采取緊急措施。政府可能會關(guān)閉連接密歇根湖和密西西比河上游的航運通道，但最終決議尚未出臺。 中西部地區(qū)的情況也是如此。再往西去，問題的癥結(jié)就在于普通鯉魚了。猶他州的官員希望移走猶他湖里3/4的鯉魚。該湖位于普羅沃附近，是猶他州最大的天然淡水湖。 猶…