或许这世上真的没有什么不老泉能让你永葆青春，但却有一种千真万确的方法？
Maybe there is no fountain of youth, but there is a surefire way to.
在这种情况下，心里的那种犹豫不决，几乎是件不可思议的事，但却是千真万确的。
The wavering of a mind under such circumstances is an almost inexplicable thing, and yet it is absolutely true.
这巨大的真海豹，象海豹能够勉强移动在陆地，但却是强壮的，敏捷的游泳者。
The largest true seal, elephant seals can barely move on land, but are strong, agile swimmers.
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