But if rivals are closely matched, the outcome can be uncertain. 但如果双方体型相当 鹿死谁手就难以预料
But he's strayed into someone else's patch. 但他误入别人的领地
But at least she can't be far away. 但至少她就在不远处
As we explore them, so we gain not only understanding, but power. 当我们探索奇迹的时候 我们所谋取的不仅仅是去了解它,而是征服
But global changes now threaten the great blooms of plankton on which the whales depend. 但是全球环境的变化 让蓝鲸赖以生存的浮游生物急剧减少
but each continually changes it's color, from blue, to striped, to black 所以每条旗鱼不断变换颜色 从蓝色--有斑纹--黑色