expand
expansion
circulate
circulation
6.________ vt.& vi.使变大;伸展→__________ n.膨胀;
扩张
rid
freedom
free
freely
7.__________ vt.& vi.循环;流传→__________ n.循环
8.________ vt.摆脱;除去
therefore
equip
9.__________ n.自由;自主→_________ adj.自由的
→________ adv.自由地
equipment
export
exportation
10._________ adv.因此;所以;因而 11._________ vt.& vi.配备;装备→___________ n.设备 12.________ vt.& vi.输出;出口→____________ n.出口