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Negotiating the channel is her first challenge.
它的第一个挑战是游过水道
The water near the mouth of the pool is slightly deeper.
水池开口处附近的水深较深
Here she sets her ambush,
它在这里准备突袭
waiting for a seal to stray out of the shallows.
等候远离浅水处的象海豹出现
For mother and calf, this is an extremely risky ploy.
对杀人鲸母子来说 这种作法风险极高
She must continuously assess how big the waves are, how deep the water is
它必须不断评估浪的大小
and what the tide is doing.
以及水深和潮汐
One bad decision would see both mother and calf stranded.
一个错误决定 就可能让它们母子受困浅滩
The seals lie in the shallows,
躺在浅水池的象海豹距离太远
just out of reach and unaware of her presence.
也不知道母鲸在这里
But she is more than aware of the dropping tide.
但母鲸很清楚现在已经退潮
A floundering seal catches her attention...
一只涉水的象海豹引起它的注意
..and with her calf, she slowly moves towards it.
它带着幼鲸缓缓逼近
The seal is lying right on the edge of a rocky ledge,
象海豹躺在一片岩架边缘
oblivious to the danger.
浑然不觉危险将至
