The city is quite large in relation to its population.
4.Setup:装置。这里指nanomotor。
5.Ifit could be scaled up to the size of an automobile engine:如果纳米电动机能按比例放大到汽车发动机的尺寸。
scaleup to是把按比例放大到。
练习:
1.Paragraph 2_____
2.Paragraph 4_____
3.Paragraph 5_____
4.Paragraph 6_____
A.An introduction of a Toyotas 225 horsepower V6 engine.
B.A description of the nanomotor in terms of power and size.
C.Surface tension.
D.Previous inventions of nanoscale products.
E.The working principle of the nanomotor.
F.Possible fields of aplication in the future.
5.Doctors envision that the nanomotor would travel through human bodies to_____.
6.Surface tension means the tendency of atoms or molecules to_____.
7.Nanoconveyors could be used.to_____.
8.Applying a small electric current causes atoms to_____.
A.remove disease
B.resist separating
C.shuffle between two molten metal droplets
D.power nanomachines
E.Sop up molecules from the large droplet
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