1·Mountaintop coal mining in Appalachia clears patches of forest contributing to the decline of birds like the cerulean warbler that breeds and forests in treetops.
在阿巴拉契亚的山顶的煤矿开采导致森林许多小片土地的减少，从而像蓝鹂莺这样的鸟类繁殖减少。
2·THE Jersey cow, a small, honey-brown bovine that is prized by farmers for the abundance of buttery, high-fat milk it produces, is one of the fastest-growing breeds in the world.
泽西牛是目前世界上繁殖速度最快的一种牛，这种小型棕黄色牛因为黄油产量以及高脂牛奶产量均非常丰富而受到农夫们的欢迎。
3·It can spend five months building its huge nest, which is over 2m wide by 3m deep, but only breeds every two years.
它会花五个月时间建筑自己巨大的鸟巢。鸟巢宽超过2米，深3米，但是每隔两年才繁殖。
4·The result of this two-stage crossbreeding process is that, though none of the hybrids involved breeds true by itself, a marketable hybrid oyster can nevertheless be turned out in large quantities.
这两阶段杂交育种的结果是，尽管杂交牡蛎重来没有真正意义上的自身繁殖，但可以为市场提供大量的杂交牡蛎。
5·European goose smaller than the brant; breeds in the far north.
比普通黑雁小的欧洲鹅；在很远的北方繁殖。