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1·The bin would be even fuller and fouler had the London dumping convention not been signed in 1972, but the sea is still hideously polluted.

如果在1972年没有签订伦敦倾废公约，现在的海洋将会是一个更满、更臭的垃圾桶。然而，如今大海依然受到了可怕的污染。