Life here is dangerous in the extreme. 这里的生活险象环生
Its warmth melts the snow early in the year. 火山的热量每年早早地融化了积雪
There is plenty of food in these waters, but to exploit it, 这里的水域食物充足 但若想享用美食
It lies in the great Southern Ocean. 它地处南太平洋
Isolated communities may evolve for millions of years in relative peace, 与世隔绝的动物群落 可能在数百万年内演化出了相对稳定的生态
Of all the species that have become extinct in recent years, 近年来濒于灭绝的物种之中
Christmas Island in the Indian Ocean. 这是印度洋上的圣诞岛
provide their young with a rather less precarious start in life. 小鸟的幼年过得安全一些