Listen to the tape then answer this question. Does Jill take the key to the front door?
听录音，然后回答问题。吉尔有没有拿到大门的钥匙？ ？
Listen to the tape then answer this question. Does Jill take the key to the front door?
听录音，然后回答问题。吉尔有没有拿到大门的钥匙？
The key issue here is to listen the TAPE/CD carefully and try your best to imitate the pronunciation.
这里关键是要仔细听磁带或碟片并尽你所能模仿发音。
The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make masted tape self-rotate reliably in heat transfer tubes.
其关键是能否在合理的加热温差下产生足够大的自然循环推动力，足以带动自动清洗螺旋扭带可靠地自转。
Tension control system design is a key technology to automatic assembly line of the plastic tape pro ducts.
张力控制系统设计是带状塑料制品自动化生产线中的一项关键技术。
The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make twisted tape self-rotate reliably in heat transfer tubes.
自然循环自动清洗式蒸发器是解决蒸发器结垢问题的理想方案，其关键是能否在合理的加热温差下产生足够大的自然循环推动力，足以带动自动清洗螺旋扭带可靠地自转。
The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make twisted tape self-rotate reliably in heat transfer tubes.
自然循环自动清洗式蒸发器是解决蒸发器结垢问题的理想方案，其关键是能否在合理的加热温差下产生足够大的自然循环推动力，足以带动自动清洗螺旋扭带可靠地自转。
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