Dawn returns, and the plankton sinks back into the depths. 黎明到来,浮游生物又回到深海

80. These manta rays are giants.
    这种蝠鲼非常巨大
81. Eight meters across and weighing over two tons.
    8米宽,超过2吨重
82. The blade-like projections on either side of the head help to steer plankton into the manta's mouth.
    头部对称的2块刀片状的凸状物 帮助蝠鲼把浮游生物送到嘴里
83. Dawn returns, and the plankton sinks back into the depths.
    黎明到来,浮游生物又回到深海
84. If we are to follow, we must use a submarine.
    如果想要跟下去,必须乘潜水艇
85. As we descend into the darkness,
    随着我们在黑暗中不断下潜
86. the pressure builds, the temperature falls.
    水压越来越大,温度越来越低

来自《行星地球 第一季 第十一集 Planet Earth S01E11 海洋深处》第 83 行