| 51. | portal fram travel |
| 门架行程 |
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| 52. | portal fram type platform |
| 门架式工作台 |
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| 53. | portal jib  rane |
| 龙门吊车 |
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| 54. | travelling portal jib  rane |
| 门式移动悬臂起重机 |
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| 55. | islet-a inus portal system |
| 胰岛腺泡门脉系统 |
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| 56. | height of portal clearance |
| 门架净空高度 |
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| 57. | "a decayed house of grey stone, with a poverty-stricken aspect, but retaining a half-obliterated shield of arms over the portal, in token of  ique gentility." |
| 那是一座破败的灰色石屋,虽说外表是一派衰微的景象,但在门廊上方还残存着半明半暗的盾形家族纹章,标志着远祖的世系。 |
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| 58. | "With the same hard demeanour, she was led back to prison, and vanished from the public gaze within its iron-clamped portal. It was whispered, by those who p red after her, that the scarlet letter threw a lurid gleam along the dark passage-way of the interior. " |
| 她就这样木雕泥塑般地又给带回监狱，从众人眼前捎失在钉满铁钉的牢门后面。那些目光随着她身影窥视的人耳语着说，她胸前的红字在中内黑漆漆的通路上投下了一道血红的闪光。 |
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| 59. | cran jib ,portal |
| 门式臂架起重机 |
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| 60. | You watched the confidential stenographer flit in and out, carelessly turning that mystic portal which, to you, revolved on hinges of fate. |
| 你盯着那个机要速记员很快地进进出出，漫不经心地转动那扇神秘的门，对你来说，它可是绕着命运的铰链在转动呢。 |
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