21.   The Tibetan antelopes are killed for their fine, warm wool, trade in which is prohibited by international treaties.

n. + prohibit >>共 262
law 37.44%
rule 10.96%
regulation 3.81%
bill 3.77%
policy 2.04%
constitution 2.04%
state 1.82%
agreement 1.78%
legislation 1.73%
government 1.60%
treaty 0.91%
treaty + v. >>共 317
be 20.43%
require 4.12%
allow 3.60%
have 3.35%
ban 3.04%
come 2.26%
call 2.26%
give 2.01%
take 1.70%
include 1.39%
prohibit 1.08%
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