Introductory phrase with descriptive noun clause.
In the vast Atlantic Ocean lies Marion Island, a remote sanctuary that was once a paradise for seabirds. However, after a British expedition stepped onto this untouched land in 1945, the island's ecological balance underwent a rapid and catastrophic decline.
It turned out that along with the scientific team, several rats had hitched a ride on the expedition's transport ships. To these rats, the island was a true paradise; with an abundance of food and no natural predators, their population exploded like wildfire. Within just eight years, the island was overrun by rats. When researchers returned and realized the severity of the situation, they sent a telegram to headquarters requesting strong cats to control the rodent infestation.
To everyone's astonishment, the five cats that arrived did not curb the rat plague. Instead, they found the long-unaware seabirds to be much easier prey. The cats essentially changed their "career" path—rather than battling large, aggressive rats, they greedily preyed on the much more docile seabirds. Years later, these five "ancestral cats" had multiplied into a staggering population of 2,500. The number of seabirds killed daily reached a horrifying 600,000! The "seabird paradise" had effectively been transformed into a "seabird graveyard."
在茫茫的大西洋中，坐落着一座名为马里恩的岛屿。这里远离尘嚣，曾是海鸟栖息与生存的世外桃源。然而，自1945年一支英国探险队踏足这片处女地以来，岛上的生态环境在短时间内发生了剧烈的恶化。
原来，随着科考队员的登岛，探险队的运输船也意外带去了几只老鼠。对于这些老鼠而言，岛屿简直就是天堂：食物极其丰饶，且由于缺乏天敌，它们如燎原之火般疯狂繁殖。仅用了8年时间，全岛便饱受鼠患之苦。当科考队员再次造访时，意识到事态严重，随即致电总部，请求派遣强壮的猫只来控制鼠患。
然而，接下来的发展却令人瞠目结舌：这五只被送往岛上的猫不仅没能抑制住鼠灾，反而将岛上那些长期处于安逸状态、毫无防备的海鸟变成了轻易可得的美食。猫群很快便“改行”了——它们不再费力去搏斗那些凶猛的大鼠，而是转向捕食相对温顺的海鸟。几年后，这五只“始祖猫”竟然繁衍出了2500只后代。据统计，每天落入猫口的惊人海鸟数量竟高达60万只！曾经的“海鸟天堂”，就这样沦为了“海鸟的坟场”。