| 31. | The novel stirs one to the depth of his soul. |
| 这部小说能触及人的灵魂深处。
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| 32. | Such creatures have rarely been seen alive by man as they live at a depth of six hundred feet. |
| 人们很少能看到活着的这类动物，因为它们生活在600英尺深的水下。
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| 33. | The platforms extend to a depth of over 100 feet under the sea. |
| 平台深入海底100英尺。
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| 34. | It extends to a depth of 3,723 feet. |
| 深达3,723英尺。
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| 35. | A sound made by tapping on the hull of a ship will be reflected from the sea bottom, and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated. |
| 敲打船体所发了的声音会从海底传回来，测出回声间隔的时间，便可算出该处海洋的深度。
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| 36. | Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land. |
| 100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。
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| 37. | Optical depth and optical path are often confused in the literature. |
| 文献中光学厚度和光程时常混淆。
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| 38. | This creature lives in the depth of the ocean. |
| 这种生物生活在海洋深处。
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| 39. | The movement is developing in breadth and depth . |
| 运动正在向纵深发展。
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| 40. | The river is 120 meters in width and 30 meters in depth . |
| 该河120米宽，30米深。
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