1. A burst of activity associated with the laying of submarine cables soon confirmed the Challenger´s observation that many parts of the ocean were two to three miles deep,
    铺设海底电缆的热潮很快证实了"挑战者"号的观察结果：海洋中很多地方可深达两三英里，

2. Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
    此后不久，英国著名的"挑战者"号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题，