31.   Half of its weight consisted of explosives, but its laser guidance system was not activated.

v. + system >>共 729
use 5.91%
develop 3.39%
have 2.88%
change 2.32%
install 2.22%
set_up 2.03%
build 1.69%
create 1.66%
test 1.51%
design 1.34%
activate 0.29%
activate + n. >>共 327
factor 6.64%
center 5.31%
guard 4.23%
system 3.74%
gene 2.54%
alarm 2.17%
cell 1.57%
unit 1.33%
outfielder 1.33%
plan 1.33%
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