loess / yellow sand / bai / dust from the Yellow River region (in China)
52747
observation
62390
Fukuoka (city)
150031
city
90345
sky / the skies / high-altitude sky / upper air
104299
before / this side
96983
centre / central / center / middle
127235
doing together (as equals) / sharing / common (land, etc.) / joint (statement, etc.)
68216
China
127408
continent
124226
come flying
145930
loess / yellow sand / bai / dust from the Yellow River region (in China)
52747
concentration / thickness / density
140879
illness / disease / sickness
147196
by means of / due to / because of / according to
4748
first-aid / emergency (aid)
66829
transportation / conveyance / delivery
144454
several / a number of
110543
study / research / investigation
75170
result / consequence / outcome / effect
74034
national
84318
environment / circumstance
61848
research establishment (institute, laboratory, etc.)
75190
prefecture (of Japan)
75261
city
90345
high rice field / very fertile rice field
104464
person in charge / responsible official / senior staff
96081
study / research / investigation
75170
member
48706
settlement / conclusion / summary
132480
loess / yellow sand / bai / dust from the Yellow River region (in China)
52747
first-aid / emergency (aid)
66829
transportation / conveyance / delivery
144454
tendency / trend / inclination
72415
atmosphere
123444
pollution / contamination
51970
material / substance
150602
influence / effect
50444
