national
84318
environment / circumstance
61848
research establishment (institute, laboratory, etc.)
75190
country
83870
ring / band
61843
Okinawa (one of the Japanese Ryukyu islands)
52911
prefecture (of Japan)
75261
Okinawa (one of the Japanese Ryukyu islands)
52911
main island / this island
156136
every year / yearly / annually
156595
enforcement / implementation / putting into practice (practise) / carrying out
94684
area of ocean
57620
in / at / on / as for / regarding / with regards to
4760
fixed point
131027
observation
62390
investigation / examination / inquiry / enquiry / survey
128839
seed / pip / kind / variety / quality / tone
97269
distribution / dissemination / allocation
151018
change / variation / alteration / mutation / transition / transformation / metamorphosis
152799
summer season
54889
quantity / amount / volume / number / amount of money
83007
water temperature
109932
by means of / due to / because of / according to
4748
white
142581
action of making something / -ification
53812
phenomenon
76598
recovery (from illness) / improvement / rehabilitation / restoration / convalescence
57214
strength / power
166458
land / shore
165009
region / limits / stage / level
46904
red clay / tuff loam / dark-red paint
114376
discharge / outward flow / efflux / effluence
165595
red clay / tuff loam / dark-red paint
114376
pollution / contamination
51970
Okinawa (one of the Japanese Ryukyu islands)
52911
main island / this island
156136
recovery (from illness) / improvement / rehabilitation / restoration / convalescence
57214
strength / power
166458
fall / decline / lowering / deterioration / degradation
130701
country
83870
ring / band
61843