One machine reached very deep part of the ocean in 1960.It went down almost seven miles.

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Onemachinereachedverydeeppartoftheoceanin1960.Itwentdownalmostsevenmiles.Onemachinereachedverydeeppa

One machine reached very deep part of the ocean in 1960.It went down almost seven miles.
One machine reached very deep part of the ocean in 1960.It went down almost seven miles.

One machine reached very deep part of the ocean in 1960.It went down almost seven miles.
有台机器在1960年到达相当深的大洋底.它下潜差不多7英里.