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1.He is also scheduled to see prototypes of his planned border wall while in San Diego.
prototype样品
Chris Retzler has built a prototype of a machine called the wave rotor.
克里斯·雷兹勒做出了一台叫做波转子的样机。
2.A crowd cheered that the destruction of the 28-story tower, which will be replaced by a modern office complex.
complex建筑群
They live in an apartment complex outside the city.
他们住在城外的公寓楼里。
