51.   The communist country is suspected by the United States, and other Western countries, of developing nuclear weapons, using plutonium from nuclear facilities.

52.   The institute has no plans to use the plutonium, he said.

53.   The minister said the prototype would use plutonium as its fuel and added the reactor would be used mainly for research purposes.

54.   The reactor was designed to use plutonium, blended with uranium.

v. + plutonium >>共 116
produce 21.00%
use 9.00%
extract 8.50%
divert 6.67%
have 5.83%
make 2.67%
contain 2.67%
yield 2.50%
separate 2.33%
convert 1.50%
use + n. >>共 1468
money 3.08%
force 2.34%
technology 1.42%
drug 1.21%
name 1.17%
computer 1.08%
fund 1.06%
proceeds 0.84%
information 0.74%
method 0.72%
plutonium 0.06%
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