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1. We saw the train coming towards the station. £¨µ±Ê±£©ÎÒÃÇ¿´¼û»ð³µÕý³¯×ųµÕ¾¿ª¹ýÀ´¡£

2. Those conditions can¡¯t have you doing the experiment. ÄÇЩÌõ¼þ²»ÄÜʹÄã×öÕâ¸öʵÑé¡£

¢ø.¡°Ö÷Óï+¶¯´Ê+±öÓï+as+-ing¡±£¬ÕâÀï-ing×÷±öÓï²¹ÓïÓ㺠1. We showed these compounds as having different structures. ÎÒÃÇÖ¤Ã÷ÁËÕâЩ»¯ºÏÎï¾ßÓв»Í¬µÄ½á¹¹¡£

2. They regard these experiments as being too simple for them. ËûÃÇÒÔΪÕâЩʵÑé¶ÔËûÃÇÀ´ËµÊÇÌ«¼òµ¥ÁË¡£ 3. We think of AB as being a straight line. ÎÒÃÇÈÏΪABÊÇÒ»ÌõÖ±Ïß¡£

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¢ù.¡°Ö÷Óï+±»¶¯Ì¬Î½Óï+-ing¡±£¬ÕâÀï-ing×÷Ö÷Óï²¹Ó 1.This step of work is called testing a hypothesis. Õâ¸ö¹¤×÷²½Öè½Ð×ö¶Ô¼Ù˵µÄÑéÖ¤¡£

2. He was seen taking pictures with a camera. ÓÐÈË¿´¼ûËûÓÃÒ»¼ÜÕÕÏà»úÔÚÅÄÕÕ¡£

¢ú.¡°Ö÷Óï+±»¶¯Ì¬Î½Óï+as+-ing¡±£¬ÕâÀï-ing×÷Ö÷Óï²¹Ó 1. Water can be shown as containing admixtures. ¿ÉÒÔÖ¤Ã÷Ë®º¬ÓÐÔÓÖÊ¡£

2. This automatic control instrument has been known as controlling the production process. ´ó¼Ò¶¼ÒÑÖªµÀ£¬Õâ¸ö×Ô¶¯¿ØÖÆÒÇÊÇ¿ØÖÆÉú²ú¹ý³ÌµÄ¡£

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3. This may be taken as (being) a result of overheating. Õâ¿ÉÒÔ£¨±»£©µ±×öÊǹýÈȵĽá¹û¡£

4. More than one type of mistake may be thought of as (being) present. ¿ÉÒÔÈÏΪ´æÔÚ×ÅÒ»ÖÖÀàÐÍÒÔÉϵĴíÎó¡£

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5. Only those substances which can be considered as being mixtures have a depressed melting point. ÄÇЩÎïÖÊ¿ÉÒÔÈÏΪÊÇ»ìºÏÎֻÓÐËüÃDzžßÓнϵ͵ÄÈ۵㡣

6. This method previously mentioned as affording good results, is widely used. £¨ÓÉ×÷¶¨ÓïµÄmentionedÒý³ö²¹Óï£©Ç°ÃæÌáµ½µÄÄܲúÉúÁ¼ºÃЧ¹ûµÄÕâÖÖ·½·¨£¬Ä¿Ç°¹ã·º²ÉÓá£

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1. It is no use only learning theories without practice. ֻѧÀíÂÛ²»Êµ¼ùÊÇûÓÐÓõġ£

2. We think it necessary improving the production process. £¨ÐÎʽ±öÓÎÒÃÇÈÏΪ¸Ä½øÉú²ú¹ý³ÌÊDZØÒªµÄ¡£

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1. While working in the plant, we learned a lot form the workers. ÎÒÃÇÔÚ¹¤³§ÀͶ¯ÆÚ¼ä£¬Ïò¹¤ÈËѧµ½ÁËÐí¶à¶«Î÷¡£

2. When being cooled from the red heat temperature, the steel reduced its capacity to dissolve carbon. µ±¸Ö´Ó³àÈÈζÈÀäÈ´ÏÂÀ´Ê±£¬±ã½µµÍÁËËüµÄ̼µÄÈܽâ¶È¡££¨ÒâÒ룩

3. The melting ice keeps the same temperature while melting. ÈܽâµÄ±ùÔÚÈܽâʱ£¬Î¶ȱ£³Ö²»±ä¡£

¢ú¢ó.¡°Ãû´Ê+-ing£¨¶¯Ãû´Ê£©¡±Õû¸öµØ×÷ǰÖö¨ÓïÓ㺠1. a metal cutting machine ½ðÊôÇиî»ú 2. a gas welding machine Æøº¸»ú 3. a steam cooling system ÕôÆøÀäȴϵͳ 4. a self priming centrifugal pump ×ÔÎüÀëÐıÃ

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1. A new technique having been worked out, the yields rose. £¨±íʾԭÒò£©ÓÉÓÚÌá³öÁËм¼Êõ£¬²úÁ¿¾ÍÉÏÉýÁË¡£


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