10.________(n.)井 11.________(n.)管;导管 12.________(n.)百万 13.________(n.)事件;大事 14.________(n.)民族;国家;国民 15.________(n.)运河;水道 16.________(n.)蒸汽;水汽 17.________(n.)污垢;泥土 18.________(n.)废墟;毁灭 vt.毁灭;使破产
well
pipe
million
event
nation
canal
steam
dirt
ruin