以纳米技术领域的打印设备的现有方式来制作硅片往往是复杂与昂贵的，而且更为合适。
Existing ways of printing devices at the nanoscale tend to be complex and expensive, and more appropriate for making silicon chips.
设备非常昂贵，技能的培训很耗费时间，而且还会让外科医生放弃花费多年获得的技能，此外，新的外科技术在面对治疗失误的诉讼面前具有很小的说服力。
The equipment is expensive, training is time-consuming and involves ditching some skills surgeons have worked hard to attain, and new surgical techniques are more vulnerable to malpractice lawsuits.
移动设备将能够发送和接收消息，不过这将会很昂贵，而且不会经常用它们去接收视频。
Mobile devices will be able to send and receive messages, but it will be expensive and unusual to use them to receive an individual video stream.
应用推荐