听力原文

The Mai Po marshes are part of the Pearl River estuary, whose muddy shores abound with crabs, worms and mud-skippers. Exposed at low tide, this smorgasbord of mud-life attracts both waders and the gei wai birds.
米埔沼泽是珠江口的一部分，螃蟹、虫子和泥鳅在这个泥质海滩上俯拾即是。退潮时暴露出泥中生命的就像自助餐一样，不仅吸引了涉禽，还吸引了基围的鸟儿。
Here on the mudflats of Inner Deep Bay, each kind of bird has its own specific feeding zone defined by the depth of the water, the length of its beak and its feeding technique.
在后海湾内湾的泥滩上，每种鸟类都拥有自己的领地：这决定于水的深度、它们的喙长和捕食的技巧。

注：视频如无法播放，请刷新

重点讲解

重点讲解：
1. part of
一些；部分；
eg. Mind trainers are now part of a tennis star's retinue.
现在，网球明星的随行人员中有些是心理培训师。
eg. As part of the treatment, he attended 15 weeks of after-care.
作为治疗的一部分，他接受了15个星期的病后护理。
2. low tide
低潮（时间）；干潮（时间）；枯潮（期）；
eg. The causeway to the island is only accessible at low tide.
通往该岛的堤道只有在枯潮时才能通行。
eg. The beach is covered in shells at low tide.
退潮的时候沙滩上到处都是贝壳。
3. abound with
大量存在；盛产；充足；
eg. The book abounds with close-up images from space.
这本书里有大量拍自太空的特写照片。
eg. The larger artificial lakes abound with birds and wildlife.
大型人工湖有很多雀鸟和野生动植物。