Although the cartons are light and easy to handle, we think it is not strong enough to be shipped.
虽然这些纸箱轻便、易拿,但我们认为它们在运输中不太结实。
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。