11. | You need a powerful saw to cut through metal . |
| 切割金属需用强劲的锯。
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12. | The aeroplane wing showed signs of metal fatigue. |
| 机翼显出有金属疲劳的现象。
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13. | Lead is a heavy metal . |
| 铅是重金属。
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14. | In former times it was thought that ordinary metal could be transmuted into gold. |
| 古时认为一般金属能变成黄金。
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15. | The car was now just a pile of twisted metal . |
| 那辆汽车已经成了一堆压缩的废铁了。
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16. | The metal frame tends to twist under pressure. |
| 这种金属框受压后容易变形。
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17. | The great weight snapped the metal bar (in two). |
| 重量很大把金属杆喀吧一声压成两截了。
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18. | She levelled the surface of the cake mixture with a metal spatula. |
| 她用金属铲抹平了蛋糕配料。
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19. | As a test the metal was subjected to great heat. |
| 这种金属经过了高温试验。
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20. | The metal buckled in the heat. |
| 金属因受热而变形。
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