v. + security >>共 638
tighten 8.10%
provide 7.43%
step_up 5.27%
improve 4.37%
sell 4.33%
increase 4.28%
beef_up 3.25%
buy 3.22%
threaten 2.30%
guarantee 2.22%
maintain 2.12%
maintain + n. >>共 867
innocence 4.21%
control 3.78%
tie 3.11%
relation 2.70%
order 2.50%
contact 2.47%
security 1.56%
stability 1.39%
sanction 1.33%
peace 1.24%
每页显示:    共 199