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天然地
 天然地
gen. naturally; by very nature
| 沥青
 沥青
chem. asphalt; asphaltic
environ. bitumen
geol. bituminous
hydroel.st. bitumen; asphalt; goudron; pitch

to phrases
天然地
gen. naturally; by its very nature
天然地
: 148 phrases in 25 subjects
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