短语讲解：
1. At least 6.4 million metric tons of that plastic has ended up in the oceans.
end up结束; 最终成为〔变得〕
例句：They all ended up puzzled.
最终他们都感到迷惑不解。
2. Once upon a time, the oceans of our planet were beautifully clean.
once upon a time从前
例句：Once upon a time there lived a king who had three daughters.
从前有个国王,他有三个女儿。
3. Whether I am surfing, whether I am sailing, whether I am swimming, I am touching, seeing, running into persistent waste that will be there longer than any of our children, any of our grand children.
run into偶然遇见
例句：He has run into trouble in his job.
他的工作遇到了麻烦。
4. It will be there for centuries, it doesn’t go away, we are adding to it
go away消失；停止，停息
例句：The pain will go away soon.
疼痛马上会减轻。
add to增加, 加强
例句：The snowstorm added to our difficulties.
暴风雪增加了我们的困难。
5. I see sea gulls trying to eat rubber gloves and all sorts of animals foraging around in what used to be natural debris is now contaminated with synthetics.
used to过去一向,过去时常;过去曾(而现在不再)做
例句：I used to go to work by underground when I was in London.
我在伦敦时,通常乘地铁上班。
