scientist observe/nsv

21.   The final fly-by should allow scientists to observe any changes in Io over the last few years.

n. + observe >>共 371 个
scientist 2.40%
group 2.06%
reporter 1.95%
troop 1.95%
researcher 1.95%
monitor 1.83%
correspondent 1.60%
force 1.60%
student 1.49%
astronomer 1.37%
scientist + v. >>共 535 个
say 14.78%
be 6.96%
believe 4.75%
find 2.95%
have 2.51%
know 2.46%
use 1.83%
hope 1.75%
try 1.60%
think 1.53%
observe 0.19%
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